1-Tris methoxy

When the aldehyde is heated on the water-bath with 25 per cent, hydrochloric acid, it yields a triphenylmethane derivative, nonamethoxy-triphenylmethane, a body consisting of snow-white crystals, melting at 184 5°. The action of concentrated nitric acid upon the solution in glacial acetic acid of this triphenylmethane derivative gives rise to 1, 2, 5-trimethoxy-4-nitrobenzene (melting at 130°). With bromine, nonamethoxytriphenylmethane combines, with separation of a molecule of trimethoxy bromobenzene, into a tribromo additive compound of hexamethoxy diphenylmethane, a deep violet-blue body. The 1, 2, 5-tri-methoxy-4-bromobenzene (melting at 54 5°) may be obtained more readily from asaronic acid. 

Es zersetzt sich in eiskaltem Wasser langsam, in Methanol dagegen schnell. Die Loslichkeit von Natrium-tri-methoxy-hydrido-borat (g/100 g Solvens) betriigt in ... 

Hydroxy-6.7-methylendioxy-l-oxo-9-(3,4,5-tri-methoxy-phenyl)-l,3,3a,4,9,9a-hexahydro-aus Podophyllotoxon und Zinkboranat 318f. 

Chloro-5,7-dimethoxy-3-phenylquinoxaline (142, R = C1) gave 2,5,7-tri-methoxy-3-phenylquinoxahne (142, R = OMe) (NaOH, MeOH, reflux, 30 min ... 

Trimethyl phosphite (11.3 g, 0.091 mol) was added to a solution of 3-benzylidene-2,4-pentanedione (16.35 g, 0.091 mol) in dry methylene chloride. The solution was maintained under nitrogen for 24 h at 20°C and for an additional 5 h at 40°C. After this time, the solvent was evaporated, and the residue was dissolved in hexane. These actions were performed in the absence of moisture. The clear hexane solution was seeded with a crystal of the pure crystalline product (obtained by crystallization from hexane by standing for 2 weeks at 0°C), and after 8 h at 0°C the crystals precipitated yielding pure 2,2,2-tri-methoxy-3-phenyl-4-acetyl-5-methyl-A4-oxaphospholene (25.12 g, 88.4%) of mp 48-51°C. 

Trimethoxybenzoyl chloride, reduction to 3,4,5-tri-methoxy benazaldehyde, 51, 8 TRIMETHYL-p-BENZOQUINONE, 52,... 

Jeong et al. (2) prepared crosslinked copolymers consisting of methyl tri-methoxy silane and dipentaerythritol penta-/hexa-acrylate, which were effective as organic thin-film transistors and used in liquid-crystal display devices. 

Chart 5 Chemical structures of allocolchicine (6), 2-mcthoxy-5-(2, 3, 4 -tri methoxy phenyl )-tropone (MTC) (7) and 2-methoxyestradiol (8), analyzed together with colchicine and CA4 through the MultiSEAL alignment procedure... 

Several other silver(I) cage-like complexes have been reported.32-35 3,8,13-Tris (4-pyridyl methyl ami no)-2,7,1 2-tri methoxy-10,15-dihydro-5/7-tribenzo a,<7, ]... 

Amin Tris-[methoxy-methyl]-E14a/2, 202 (Cl - OR) Hydroxylamin... 

It has already been pointed out (page 346) that the methanolysis of streptomycin yielded, in addition to streptidine, an amorphous, tri-methoxy, basic, disaccharide-like substance which was named methyl streptobiosaminide hydrochloride dimethyl acetal. Acetylation of this material yielded a crystalline tetraacetyl derivative whose composition and molecular weight were in agreement with those expected for the second hydrolytic fragment of streptomycin. ... 

FIGURE 31.5 Calixarenes used in the BLM experiments for U(IV) transport studies. I (5,ll,17,23-tetra-fert-butyl-25,26,27,28-tetra hydroxy calix[4]arene) II (5,ll,17,23,29,35-hexa-fert-hutyl-37,38,39,40,4I,42-hexa hydroxy calix[6]arene) III (5,11,17,23,29,35,41,47-octa-terr-butyl-49,50,51,52,53,54,55,56-octa hydroxy calix[8]arene) and LV (5,II,I7,23,29,35-hexa-fert-butyI-37,39,4I-tri methoxy calix [6]arene -38,40,42-triol). (Reproduced from Ramakumar, J., Nayak, S.K., and Maiti, B., J. Membr. Sci., 196, 203, 2002.)... 

The sirupy oxidation product from methyl jS-u-arabinoside formed a crystalline methanolate, which was recrystallized unchanged from methanol, was distilled without loss of methanol, and formed a mono-p-nitro-benzoate. Treatment with water gave the original sirupy hemialdal. Reaction of the oxidation product from methyl a-D-xylopyranoside with methanolic hydrogen chloride caused complex optical-rotational changes these were interpreted as formation of, and equilibria between, the tri-methoxy-dioxane (25) isomers derived from the hemialdal form of the oxidation product. 

Ethyl 2-( -Hydroxy-3,4-methylene-dioxy-benzyl)-4-oxo-4-(2,3>4-tri-methoxy-phenyl)- 2081 C H NO... 

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