Isophthaloyl dichloride

The use of isophthalic acid-2-methyl aziridine was also reported as a bonding agent for composite propellants in the literature. Based on this fact, its analog, that is, isophthalic dimethyl oxaziridine (reaction product of oxaziridine unsubstituted on the nitrogen and isophthaloyl dichloride) also appears to be a potential bonding agent [223] but needs to be evaluated in propellant formulations. 

The reaction of the Ni(II) complex, 25, with isophthaloyl dichloride resulted in the dinuclear Ni(II) complex, 26. The two coordination planes were nearly coplanar with the metal ions being 12.8 A apart (50). 

Host 2 was obtained in 10% yield by reacting isophthaloyl dichloride (3) with the cyclohexano-substituted diamine 4. The association constant (ATa) of host 2 and guest 1 was determined to be 103 M-1 in chloroform. When the synthesis of 2 was changed to a two-step procedure, the yield could be increased to 51% and at the same time two new products with the same molecular mass were isolated (Figure 3) [15]. 

Supposing this mechanism and considering the restricted circumrotation, the positioning of substituents on the reactants should result in stable isomeric [2]catenanes. Indeed the well-aimed variation of the substitution pattern resulted in three different [2]catenanes - 14-16 (Figures 6 and 7) [20, 21], When isophthaloyl dichloride (3) was reacted with the methoxy-substituted diamine 13 (pathway... 

The [2]catenane syntheses presented so far are very sensitive towards modification of the building blocks, e.g. no [2]catenane can be detected when nitro-substi-tuted isophthaloyl dichloride is reacted with diamine 4 [8 a]. The NO2 group seems to disturb the template by competing with the carbonyl groups in forming hydrogen-bonds with the NH groups. 

In contrast, when the substitution pattern is reversed, i.e. the 2,5-fiirane unit is incorporated in the diamine moiety 25 and reacted with isophthaloyl dichloride (3), not only macrocycle 24, but also the two possible isomeric catenanes 26 and 27 are formed. This suggests that the isophthaloyl unit is a better guest or reacts quicker than the furanoyl moiety. The yields obtained for 26 (20%) and 27 (8%) indicate that the isophthaloyl-guest in the second macrocyclization prefers the west-side a) niche of the host 24. Both isomers, the in/out 26 and the out/out 27 furano catenane could be crystallized and their X-ray crystal structures were... 

In 1995 Leigh et al. reported a catenane synthesis that is convincing not only because of its simplicity but also because it is accessible to a wide variety of reactants [24]. When isophthaloyl dichloride (3) was reacted with l,4-bis(aminometh-yl)benzene at high dilution [2]catenane 28 was isolated in 20% yield without further purification by column chromatography (Figure 13). 

When the homologs of isophthaloyl dichloride 59 f and 59g are subjected to the threading procedure the situation is similar. 59 f leads to the corresponding rotaxane in 7% yield, whereas the homologous rotaxane 60g was only detectable by mass spectrometry [38]. 

Isopentane, ml 49 Isopentyl alcohol, ml 55 Isopentyl isovalerate, ml70 Isophorone, t340 Isophthalic acid, bl6 Isophthalonitrile, d237 Isophthaloyl dichloride, bl4 Isoprene, ml 47 Isopropanolamine, a269 Isopropenyl acetate, p208 Isopropenylacetylene, ml 66 4-Isopropenyl-1 -cyclohexene-1 -< p58... 

Ester-based cascades (e.g., 107) have been prepared[77 80i by using 5-(tert-butyldime-thylsiloxy)isophthaloyl dichloride (108), which was synthesized in high yield from 5-hydroxy-isophthalic acid (Scheme 5.26). The dendron wedges were prepared by treatment of siloxane 108 with phenol to give bis(aryl ester) 109, which was hydrolyzed, or desilylated (HC1, acetone), to generate a new phenolic terminus. Treatment of this free phenolic moiety with monomer 108, followed by hydrolysis, afforded the next tier (110). Repetition of the sequence followed by reaction of the free focal phenols with a triacyl chloride core, (e.g., 86), afforded the fourth tier dendrimer 107 of the polyester aryl series. It was noted that the choice of base (N, A-dimethylaniline) used in the final esterification was critical, since with pyridine bases (pyridine or 4-(dimethylamino)pyridine) facile transesterification resulting in branch fragmentation occurred. 

Neenan and Miller [118] reported the preparation of poly (arylester) dendrons using a convergent iterative sequence consisting of esterification and hydrolysis reactions as illustrated in Scheme 14. The key intermediate in the synthesis of these dendrons is 5-(te/V-butyldimethylsiloxy)isophthaloyl dichloride, 48, which is first converted to the diester with phenol, followed by hydrolysis to the diester phenol. This dendron is designated [3-OH] indicating it contains three phenyl... 

Figure 6 Bemylic amide [2]catenane formation in one step from isophthaloyl dichloride and xylylene diamine. The smallest. self-replicating system known the first-formed macrocycle templates the formation of an identical second one through it by hydrogen bonding...

Despite their simplicity, neither of these routes have been developed commercially. However, the use of phosgene with carboxylic acids to form acid chlorides has many advantages over the use of PCI 5 or SOClj, in that the by-products (COj and HCI) are readily removed, leaving a high purity product this is especially important in the synthesis of acid chlorides of fatty acids, which resist distiliation [1841a]. Isophthaloyl dichloride and terephthaloyl dichloride are both produced commercially by the action of phosgene on their respective acids [1804a]. 

Like RO membranes, many NF membranes are polyamide thin film composite membranes. These membranes can be prepared by interfacial reaction of piperazine with 1,3,5-benzenetricarbonyl trichloride and/or isophthaloyl dichloride, or by treating polyamide thin film composite RO membranes with compounds such as mineral acids, to increase their flux and lower their salt rejection. A few ceramic NF membranes have also been developed. New methods... 

The rotaxanes studied by us were also synthesied by the D. Leigh group using the third metlrod. First the thread was prepared, as it s shown in Fig. 4. Than, by acondensa-tion of trletlrylamine, isophthaloyl dichloride and xylylene diamine in chloroform, the rotaxanes were obtained [42,43,44]. We have studied more particularly the rotaxanes with the fumaric (fumrot) and nitrone (norot) threads (cf. Fig. 5). 

Hydrogen-bonding in neutral rotaxanes The independent discovery in 1992 by Hunter [25], and Vogtle and coworkers [26, 102] of catenanes made of interlocked amide cyclophanes led to the development of a novel family of neutral catenanes and rotaxanes. In an example of rotaxane synthesis [103] macrocycle (38) and isophthaloyl dichloride (39) were mixed in dichloromethane, and the trityl amine... 

Both isophthaloyl dichloride and a,a -dibromo-m-xylene gave only dibenzodiaza-crowns, the 2 2 cyclization products, when treated with iV-substituted diethanolamine (method X-3) (He et al., 1986 Johnson et al., 1985 Zhang et al., 1983). 

Beilstein HandbooK Reference) m-Benzenedicarbonyl chloride BRN 0638342 Dichlorid kyseliny isoftalove EINECS 202-774-7 HSDB 5326 Isophthalic acid chloride Isophthalic acid dichloride Isophthalic chloride Isophthaloyl chloride Isophthaloyl dichloride Isophthalyl chloride m-Phthalic dichioride m-Phthaloyl chloride m-Phthalyl dichloride meta-Phthalyl dichloride NSC 41884. Solid mp = 43.5 bp = 276 d = 1.3880 slightly soluble in H2O, EtOH, soluble In EtzO. 

Poly(dimethyl siloxane)-polyamide, isophthaloyl dichloride, diamino poly(di-Me siloxane) H sequence distribution 123 ... 

Polycondensation of 4,4 -oxydianiline (ODA) and isophthaloyl dichloride (IPA) followed by terminal modification has been carried out in a flow microreactor system (Fig. 34) [234]. The polymerization in the flow microreactor is faster than that in the batch system. A higher mixing efficiency of monomer seems to be responsible for the faster reaction. It is also important to note that the molecular... 

Fig. 34 Flow microreactor system for polycondensation of 4,4 -oxydianiline (ODA) and isophthaloyl dichloride (IPA) followed by terminal modification. Ml, M2 micromixeis Rl, R2...

Bis (3-carboxypropionyl) peroxide. See Succinic acid peroxide Bis (p-chlorobenzoyl) peroxide. See p,p -Dichlorobenzoyl peroxide 1,3-Bis (chlorocarbonyl) benzene. See Isophthaloyl dichloride 1,2-Bis (chlorodimethylsilyl) ethane. See... 

Isophthalic acid chloride Isophthalic acid dichloride. See Isophthaloyl dichloride Isophthalic acid, diethyl ester. See Diethyl isophthalate... 

Isophthalic chloride Isophthaloyl chloride. See Isophthaloyl dichloride Isophthaloyl dichloride CAS 99-63-8 EINECS/ELINCS 202-774-7 Synonyms 1,3-Benzenedicarbonyl chloride 1,3-Benzenedicarbonyl dichloride m-Benzenedicarboyl chloride 1,3-Bis (chlorocarbonyl) benzene Isophthalic acid chloride... 

Isophthalic acid dichloride Isophthalic chloride Isophthaloyl chloride Isophthaloyl dichloride Isophthalyl chloride Isophthalyl dichloride m-Phthalic dichloride m-Phthaloyl chloride m-Phthaloyl dichloride m-Phthalyl chloride m-Phthalyl dichloride... 

Isophthaloyl dichloride Isophthalyl chloride Isophthalyl dichloride. See Isophthaloyl dichloride... 

Phthalocyanine green 6G 29H,31H-Phthalocyanine, 1,3,8,16,18,24-hexabromo-2,4,9,10,11,15,17,22,23,25-decachloro-, copper complex. See Pigment green 36 Phthalo green. See Phthalocyanine green Phthalol. See Diethyl phthalate m-Phthaloyl chloride. See Isophthaloyl dichloride... 

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