Depending on the relative positions of the acetyl groups in the aromatic rings, the Pseudomonas sp. lipase-catalyzed hydrolysis of diacetoxynaphthalenes in tert-butylmethyl ether proceeds regioselectively to afford the corresponding monoacetates.
Acylation of heteroatoms (O, N and S) with acetyl chloride based on the use of a catalytic amount of the moisture stable, inexpensive ZrOCl2·8H2O, proceeds efficiently producing the corresponding acylated products in excellent yields.
Acylation of a variety of alcohols, phenols, aliphatic and aromatic amines, a thiol and a thiophenol proceeds efficiently using BiCl3 generated in situ from the procatalyst BiOCl and acetyl chloride in a solvent or under solventless conditions, furnishing the corresponding acylated derivatives in very good to excellent yields.
The first vinyl acetate mediated organocatalytic transesterification of phenols: a step towards sustainability
作者:Manoj Kumar、Sourav Bagchi、Anuj Sharma
DOI:10.1039/c5nj01436k
日期:——
The present report outlines our efforts toward a simple yet elegant protocol for O-acylation of a wide variety of phenols. This highly enabling and solventless method relies on vinylacetate as an innocuous acyl donor and DABCO as an organocatalyst. Operational simplicity, excellent yields, higher and faster conversion rates without excess reagents, a simple workup and essentially no need of columns
Synthesis of 4-acetoxystyrene oxide and related compounds
申请人:HOECHST CELANESE CORPORATION
公开号:EP0356070A1
公开(公告)日:1990-02-28
A method is provided of producing 4-acetoxystyrene oxide and substituted 4-acetoxystyrene oxides wherein at least one of the ring hydrogen atoms is substituted with a C₁ to C₁₀ alkyl or alkoxy, amino, halogen or nitro, wherein 4-acetoxystyrene or the corresponding substituted 4-acetoxystyrene is epoxided with peracetic acid containing no more than a trace of a mineral acid or water. The invention also includes, as new compositions of matter, 3,5-dimethyl-4-acetoxystyrene oxide and 3,5-dibromo-4-acetoxystyrene oxide.