One-Pot Tandem Synthesis of β-Trimethylsilyloxy Thioesters from Thioacids, Epoxides, and HMDS Catalyzed by Silica Gel Under Solvent-Free Conditions
摘要:
A procedure for one-pot preparation of beta-trimethylsilyloxy thioesters from epoxides, thioacids, and hexamethyl disilazane (HMDS) in the presence of silica gel under solvent-free condition was developed. The desired silylated products were isolated in good to excellent yields after silica-gel column chromatography.Supplemental materials are available for this article. Go to the publisher's online edition of Synthetic Communications (R) to view the free supplemental file.
Efficient Regioselective Ring Opening of Oxiranes with Thioacids in the Presence of β‐Cyclodextrin in Water
作者:B. Srinivas、R. Sridhar、K. Surendra、N. Srilakshmi Krishnaveni、V. Pavan Kumar、Y. V. D. Nageswar、K. Rama Rao
DOI:10.1080/00397910600775572
日期:2006.11.1
Abstract A mild and convenient synthesis of β‐hydroxy thioesters has been achieved by the regioselectiveringopening of oxiranes using thioacetic acid and thiobenzoic acid in the presence of β‐cyclodextrin in water at room temperature. β‐Hydroxy thioesters are realized in high yields, and β‐cyclodextrin can also be recovered and reused. IICT Communication No. 060302.
Abstract Epoxide ringopening with thioacetic acid and thiobenzoic acid was investigated in the presence of water under catalyst-free conditions. This green and simple process gave an excellent yield. With simple decanting, the products were obtained in high purity and on a large scale. In this process, alkyl halide and ester cleavage were not observed.
One-Pot Tandem Synthesis of <font>β</font>-Trimethylsilyloxy Thioesters from Thioacids, Epoxides, and HMDS Catalyzed by Silica Gel Under Solvent-Free Conditions
作者:Mohammad Abbasi
DOI:10.1080/00397911.2012.667183
日期:2013.7.3
A procedure for one-pot preparation of beta-trimethylsilyloxy thioesters from epoxides, thioacids, and hexamethyl disilazane (HMDS) in the presence of silica gel under solvent-free condition was developed. The desired silylated products were isolated in good to excellent yields after silica-gel column chromatography.Supplemental materials are available for this article. Go to the publisher's online edition of Synthetic Communications (R) to view the free supplemental file.