Asymmetric silyl nitronate cycloadditions with bornane-10,2-sultam derivatives
摘要:
Asymmetric silyl nitronate cycloadditions with N-acryloyl (2R)-bornane-10,2-sultam, N-acryloyl (2S)-bornane-10,2-sultam, and N-methacryloyl (2R)-bornane-10,2-sultam have been studied. The asymmetric silyl nitronate cycloaddition/elimination methodology provides a general route for the asymmetric synthesis of 2-isoxazolines.
Asymmetric silyl nitronate cycloadditions with bornane-10,2-sultam derivatives
摘要:
Asymmetric silyl nitronate cycloadditions with N-acryloyl (2R)-bornane-10,2-sultam, N-acryloyl (2S)-bornane-10,2-sultam, and N-methacryloyl (2R)-bornane-10,2-sultam have been studied. The asymmetric silyl nitronate cycloaddition/elimination methodology provides a general route for the asymmetric synthesis of 2-isoxazolines.
A novel general method for the synthesis of nitrones by reaction of nitroso compounds with anions of aliphatic nitro compounds
作者:I. M. Lyapkalo、S. L. Ioffe、Yu. A. Strelenko、V. A. Tartakovsky
DOI:10.1007/bf01431312
日期:1996.4
Anions of aliphaticnitrocompounds R1R2C=NO2− react with nitroso compounds RNO to give nitrones R1R2C=N(O)R. Salts of nitrocompounds with metals and Et3N, as well as trimethylsilyl nitronates in the presence of F−, can serve as the sources of the anions. The structure of the nitrones was established by NMR spectroscopy. 1,3-Dipolar cycloaddition of a series of the nitrones obtained to olefins was