MURTHY K. S. KESHAVA; HASSNER ALFRED, TETRAHEDRON LETT., 28,(1987) N 1, 97-100
作者:MURTHY K. S. KESHAVA、 HASSNER ALFRED
DOI:——
日期:——
Cycloadditions. 37. Molecular mechanics calculations and the stereochemical course of intramolecular dipolar cycloadditions of nitrile oxides
作者:Alfred Hassner、K. S. Keshava Murthy、Albert Padwa、William H. Bullock、Paul D. Stull
DOI:10.1021/jo00256a030
日期:1988.10
Fused β-lactams via intramolecular dipolar cycloaddition
作者:K.S.Keshava Murthy、Alfred Hassner
DOI:10.1016/s0040-4039(00)95659-4
日期:1987.1
Two routes were examined that permit conversion of 4-vinyl-2-azetidinones via intramolecular nitrile oxide-olefin or azide-olefin cycloaddition into tricyclic β-lactams. Stereoselectivity in these cycloadditions as well as further chemoselective transformation of the products were shown to be dependent on the size of the newly formed ring.