TY - JOUR
T1 - Use of chiral B(III) complexes in the cycloaddition of C,N-diphenylnitrone to tert-butyl vinyl ether
AU - Bayón, Pau
AU - De March, Pedro
AU - Figueredo, Marta
AU - Font, Josep
AU - Medrano, Jordi
PY - 2000/11/3
Y1 - 2000/11/3
N2 - The 1,3-dipolar cycloaddition of C,N-diphenylnitrone to tert-butyl vinyl ether in the presence of several chiral B(III) complexes which incorporate different bidentate ligands has been investigated. The use of these B(III) species reverses the endo/exo diastereoselectivity in relation to the uncatalysed reaction, giving trans cycloadducts as major products. Some of the catalysts gave very fast and high yielding reactions, but the enantioselectivities were only low to moderate. (C) 2000 Elsevier Science Ltd.
AB - The 1,3-dipolar cycloaddition of C,N-diphenylnitrone to tert-butyl vinyl ether in the presence of several chiral B(III) complexes which incorporate different bidentate ligands has been investigated. The use of these B(III) species reverses the endo/exo diastereoselectivity in relation to the uncatalysed reaction, giving trans cycloadducts as major products. Some of the catalysts gave very fast and high yielding reactions, but the enantioselectivities were only low to moderate. (C) 2000 Elsevier Science Ltd.
UR - https://www.scopus.com/pages/publications/0034601961
U2 - 10.1016/S0957-4166(00)00405-5
DO - 10.1016/S0957-4166(00)00405-5
M3 - Article
SN - 0957-4166
VL - 11
SP - 4269
EP - 4278
JO - Tetrahedron: asymmetry
JF - Tetrahedron: asymmetry
IS - 21
ER -