Veratrole 1,2-Dimethoxybenzene

Cyclotriveratrylene is formed in over 70 % yield by the condensation of the veratryl cation (7.42), whether it is produced from veratryl alcohol (7.41) or directly from veratrole (1,2-dimethoxybenzene) and formaldehyde in aqueous acid. In organic solvents such as acetic acid in the presence of a... 

One might imagine that these comprehensive data on anisole would enable us to predict the intramolecular selectivity of nitration of veratrole (1,2-dimethoxybenzene) with some success. Veratrole is nitrated at the limiting rate (Figure 5). (19) The... 

Foods may contain a number of alkyl aryl ethers that are components of essential oils of different spices as well as secondary substances. These ethers are most often derived from anisole (methoxybenzene, 8-33) or veratrole (1,2-dimethoxybenzene, 8-33), which are substituted by a prop-l-en-yl or l-prop-2-en-l-yl (allyl) group at the C-4 position of the benzene ring. An important ether is estragole (also known as 4-aUylanisole or methyl chavicol, 8-33), which is the main component (over 80%) of basil essential oil (see Table 8.32, later) and tarragon (dragon s wort) essential oil... 

Papaverine, used to treat heart diseases as a vasodilator, is a dmg that was originally made from vanillin but has since been made from veratrole and (9f2v (9-l,2-dimethoxybenzene. Vanillin is also used as a pharmaceutical excipient. 

Vacuum was applied to shift the equilibrium forward by removal of the activated alcohol formed [30, 31, 37, 38]. In the enzymatic polycondensation of bis(2,2,2-trifluoroethyl) sebacate and aliphatic diols, the polymer with Mw of more than 1 x 104 was obtained using lipases CC, MM, PPL, and Pseudomonas cepacia lipase (lipase PC) as catalyst and lipase MM showed the highest catalytic activity [37]. Solvent screening indicated that diphenyl ether and veratrole were suitable for the production of the high molecular weight polyesters under vacuum. In the PPL-catalyzed reaction of bis(2,2,2-trifluoroethyl) glutarate with 1,4-butanediol in veratrole or 1,3-dimethoxybenzene, periodical vacuum method improved the molecular weight (Mw 4 x 104) [38]. 

Veratrol. See in Vol 5, D1302-L to D1303-L under Dimethoxybenzene and Derivatives ... 

SYNS l-ALLYL-3,4-DIMETHOXYBENZENE 4-ALLYLVERATROLE l,2-DIMETHOXY-4-ALLYL-BENZENE l-(3,4-DIMETHOXYPHENYL)-2-PROPENE ENT 21,040 1,3,4-EUGENOL METHYL ETHER EL GENYL METHYL ETHER FEMA No. 2475 METHYL EUGENOL (FCC) VERATROLE METHYL ETHER... 

TrmitTO-l, 2-dimethoxybenzene or 3,4.5 Trm 7.royerfliro/e-, crysts (from benz or acet acid), mp 144—45° sol in hot ale, eth, toluene or butanol si sol in w, heptane methanol prepd by nitration of veratrole with coned HNOg H2SO4 at 100°(Ref 5)... 

Dimethoxybenzene (veratrole) [91-16-7] M 137.2, m 23 , b 208.5-208.7, d 1.085, n 1.53232. Steam distd. Fractionally distd from BaO, CaH2 or Na. Crystd fi-om benzene or low-boiling pet ether at 0°. Fractionally crystd from its melt. Stored over anhydrous Na2S04. 

Finally, we have investigated the CoCl2 catalyzed trifluoacetylation using TFA for dimethoxyaromatics veratrole (ortho-dimethoxybenzene) and meta-dimethoxy-benzene. Veratrole did not react despite several attempts (eqn. 12) and meta-dimethoxybenzene is the subject of trifluoroacetylation in the position ortho/para (eqn. 13). 

We have studied the O-alkylation of catechol in guaiacol by solid-gas catalysis. In this reaction, 1,2-dimethoxybenzene 2 (veratrole) can be produced as a coproduct and also some C-alkylated derivatives as by-products. We have chosen to mainly study phosphates derivatives and to realize a large screening of catalysts. 

H.40) Benzene, 1,2-dimethoxy-, 1,2-dimethoxybenzene, 0,0-dimethylcatechol, veratrole [91-16-7] FEMA 3799... 

Synonyms 1-Allyl-3,4-dimethoxybenzene 4-Allyl-1,2-dimethoxybenzene 4-Allyl veratrole Benzene, 1,2-dimethoxy-4-(2-propenyl)- 1,2-Dim et h oxy-4-a I lyl benzene 1-(3,4-Dimethoxyphenyl)-2-propene 3-(3,4-Dimethoxyphenyl) propene 1,2-Dimethoxy-4-(2-propenyl) benzene Eugenol methyl ether 1,3,4-Eugenol methyl ether Eugenyl methyl ether Veratrole methyl ether Classification Aromatic compd. 

Veratrol Veratrole. See o-Dimethoxybenzene Veratrole methyl ether. See Methyl eugenol Veratryl aldehyde. See Veratraldehyde Verbascum thapsis extract Verbascum thapsus. See Mullein (Verbascum thapsus) extract... 

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