1,2-phenylene dibenzoate

Another interesting example is 1,4-phenylene dibenzoate (3.10) and its vinyl substituted homologue 2-vinyl-1,4-phenylene dibenzoate (3.11) (Zhou et al, 1993) ... 

A thermoformed cup comprising a nucleated propylene homopolymer contains a substituted 1,2-phenylene diberrzoate selected from the group consisting of 3-methyl-5-tert-butyl-l,2-phenylene diberrzoate and 3,5-diisopropyl-l,2-phenylene dibenzoate. ... 

Obtained by reaction of 4-formyl-1,2-phenylene dibenzoate with 2-hydroxy-4-(P-D-glucopyranosyloxy)-acetophenone in acetone in the presence of 2 N aqueous sodium hydroxide at 20° for 17 h (29%) [5928]. 

Thianthrene is numbered as shown in 1 using current Chemical Abstracts numbering before 1937, the numbering shown in 2 was used in Chemical Abstracts. The ring positions ortho to sulfur have been termed a, and the others are termed y3. Alternative names for thianthrene, found more in older literature, are dibenzo-1,4-dithiadiene, dibenzo-1,4-dithiin, di-o-phenylene sulfide, and diphenylene disulfide. The literature also contains references to o-thianthrene this is dibenzo[c,e][l,2]dithiin, (3). 

Synthesis of the p-phenylene-bridged dibenzo-fused corannulene C60Me5Ph3H2 (10) To a solution of 4 (40 mg, 38 pmol) in PhCN (10 mL) in a Schlenk tube was added a solution of lithium naphthalenide (1.5 mL, 0.76 M in THF, 1.1 mmol) under an argon atmosphere. The color of the solution changed immediately from yellow to... 

There have been many attempts to change the melt flow properties of a polymer by incorporating a small amount of an anisotropic or an immiscible polymer. For example, Brody [220,221] demonstrated a windup speed up to 5000 m/min by adding a small amount of copoly(chloro-l,4-phenylene ethylene dioxy-4,4 -dibenzoate/terephthalate) (CLOTH) or copoly(4-hydroxybenzoic/6-hydroxy-2-naphthoic acid) into nylon-6,6. More recently, Vassi-latos [222] disclosed the melt spinning of nylon-6,6 at speeds up to 6000 m/min with the addition of a minor amount of liquid crystalline polymers such as CLOTH. This technique clearly offsets some of the cost advantages of high-speed spinning. 

DOP, dioctylphthalate IPPD, A -isopropyl-W-phenyl-p-phenylene diamine NBR, acrylonitrile-butadiene rubber NR, natural rubber PA, polyamide PAAE, polyamide amine epichlorohydrin PBDD, polybrominated dibenzo-p-dioxins PBDF, polybrominated dibenzofu-rans PBT, polybutylene terephthalate PDBS, polydibromostyrene. 

The cw-dibenzo-24-crown-8- and his(meta-phenylene)-32-crown-10-based capsules 227 and 252 (see Sect. 2.3.1) are described in [177] to form host-guest 1 1 and 2 1 cage complexes (Scheme 2.156), respectively, with an encapsulated A -methylated l,2-bis-(4-pyridinium)ethane dication. In them, the Af-methyl group of this... 

Other 5-membered Heterocyclic Derivatives. Several other classes of 5-membered heterocyclic derivatives exist Most are polymerized via a step-growth mechanism. A dibenzo fused derivative of polythiophene (figure 15), which is also partially formed upon doping of poly(phenylene sulfide), can also be synthesized by reaction of dibromo benzothiophene and sodium sulfide. Carbazoles have beoi polymerized by in situ coupling of their Grignards as well by as coupling of diiodocarbazole in molten iodine Thin films of carbazole polymers have been prepared by... 

Bis(phenylurethane)-2,4,6-octatriynediol, 2,5-Methyl-p-phenylene 4,4 -ethylenedioxydibenzoate p-Phenylene 4,4 -(ethylenedioxy)dibenzoate N,N -Diethylbipheny lene terephthalamide... 

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