Addition of nitrile oxides to 2,3-dihydrofurylsilanes. Crystal and molecular structure of tetrahydrofuro-[2,3-d]-isoxazolylsilanes

Autor: I. Zicmane, V. Dirnens, Edmunds Lukevics, A. Kemme, Juris Popelis, N. Pokrovska
Rok vydání: 1999
Předmět:
Zdroj: Journal of Organometallic Chemistry. 586:200-207
ISSN: 0022-328X
DOI: 10.1016/s0022-328x(99)00266-1
Popis: Silylsubstituted tetrahydrofuro-[2,3- d ]-isoxazoles were prepared by the [2+3] cycloaddition of nitrile oxides to 5-(2,3-dihydrofuryl)silanes. Compounds with two condensed bicycles at the silicon atom: bis[6a-(3-methyl-3a,4,5,6a-tetrahydrofuro-[2,3- d ]-isoxazolyl)]dimethyl and bis[6a-(3-methyl-3a,4,5,6a-tetrahydrofuro-[2,3- d ]-isoxazolyl)]diphenylsilanes were prepared by the addition of acetonitrile oxide to the corresponding bis[5-(2,3-dihydrofuryl)]silanes. X-ray analysis demonstrated that 3-methyl-6a-trimethylsilyl-3a,4,5,6a-tetrahydrofuro-[2,3- d ]-isoxazole exists as RR/SS enantiomers, while bis[6a-(3-methyl-3a,4,5,6a-tetrahydrofuro-[2,3- d ]-isoxazolyl)]diphenylsilane-as SSRR/RRSS enantiomers.
Databáze: OpenAIRE