Oxygen Effect in the Iodo Lactonization of Unsaturated Carboxylic Acids Leading to 7- to 12-Membered Ring Lactones
摘要:
The reaction of omega-alkenoic acids with bis(sym-collidine)iodine(I) hexafluorophosphate led to (iodomethyl) epsilon-caprolactones in good yields (49-75%) and medium ring iodo lactones in low yields (4-5%). The latter compounds have been obtained after introduction of an oxygen atom in the carbon chain. The position of the oxygen appeared important. This oxygen effect was explained by the stabilization of the intermediate iodonium ion by the oxygen atom.
HUHTASAARI, M.;SCHAEFER, H. J.;BECKING, L., ANGEW. CHEM., 1984, 96, N 12, 995-996
作者:HUHTASAARI, M.、SCHAEFER, H. J.、BECKING, L.
DOI:——
日期:——
Oxygen Effect in the Iodo Lactonization of Unsaturated Carboxylic Acids Leading to 7- to 12-Membered Ring Lactones
作者:Bruno Simonot、Gerard Rousseau
DOI:10.1021/jo00099a019
日期:1994.10
The reaction of omega-alkenoic acids with bis(sym-collidine)iodine(I) hexafluorophosphate led to (iodomethyl) epsilon-caprolactones in good yields (49-75%) and medium ring iodo lactones in low yields (4-5%). The latter compounds have been obtained after introduction of an oxygen atom in the carbon chain. The position of the oxygen appeared important. This oxygen effect was explained by the stabilization of the intermediate iodonium ion by the oxygen atom.
Preparation of 3-(n-Alkenoxy)propanoic Acids
作者:Bruno Simonot、Gérard Rousseau
DOI:10.1080/00397919308009812
日期:1993.2
Abstract 3-(n-Alkenoxy) propanoic acids have been prepared by reaction of alkenols with tert-butyl acrylate (catalyzed by Triton B or n-butyl lithium) followed by cleavage of the tert-butyl group by CF3COOH or KO2.
摘要 3-(正链烯氧基)丙酸是通过烯醇与丙烯酸叔丁酯(由 Triton B 或正丁基锂催化)反应,然后用 CF3COOH 或 KO2 裂解叔丁基来制备的。