天堂网亚洲,天天操天天搞,91视频高清,菠萝蜜视频在线观看入口,美女视频性感美女视频,95丝袜美女视频国产,超高清美女视频图片

Welcome to chemicalbook!
Chinese English Japanese Germany Korea
400-158-6606
Try our best to find the right business for you.
Do not miss inquiry messages Please log in to view all inquiry messages.

Welcome back!

ChemicalBook CAS DataBase List Cinnamyl acetate
103-54-8

Cinnamyl acetate synthesis

13synthesis methods
By direct esterification of cinnamic alcohol with acetic acid (or anhydride) under azeotropic conditions (Arctander, 1969).
-

Yield:103-54-8 97%

Reaction Conditions:

with toluene-4-sulfonic acid in acetonitrile at 20; for 16 h;

Steps:

General procedure for the protection of alcohols 1 as acetyl-derivatives.
General procedure: A mixture of the alcohol 1 (1 mmol), isopropenyl acetate (0.45 mL, 4 mmol) and p-TsOH (4 mg, 0.02 mmol) in dichloromethane or acetonitrile (4 mL) was stirred the indicated temperature (see Tables 1 and 2). Reaction times ranged from 16 to 36 h. After completion of the reaction (TLC monitoring) the mixture was poured into 10 mL of 10% aqueous sodium hydrogen carbonate solution. The aqueous phase was extracted with ethyl acetate (3 × 10 mL) and the combined organic phases were washed with 10 mL of brine, dried over sodium sulfate and then evaporated under vacuum. Purification by silica gel column chromatography afforded the pure acetyl ester 2. Physical and spectral data of known compounds were consistent with the ones reported in literature. Physical and spectral data of not previously described compounds are reported below.

References:

Temperini, Andrea;Minuti, Lucio;Morini, Tommaso;Rosati, Ornelio;Piazzolla, Francesca [Tetrahedron Letters,2017,vol. 58,# 43,p. 4051 - 4053]

FullText

Cinnamyl acetate Related Search: