期刊
SYNLETT
卷 -, 期 12, 页码 1805-1808出版社
GEORG THIEME VERLAG KG
DOI: 10.1055/s-2003-41442
关键词
acylations; bismuth compounds; catalysis; solvent-free reactions; heteroatoms
Bismuth oxide perchlorate efficiently catalyzes the acetylation of structurally diverse phenols, alcohols, thiols, and amines under solvent free conditions. Sterically hindered and electron deficient phenols are acetylated in excellent yields with stoichiometric amounts of Ac2O at room temperature. Acylation of acid-sensitive alcohols is carried out efficiently without competitive side reactions. Optically active substrates are acetylated without any detrimental effect on the optical purity.
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