ALIEV Z. G.; ATOVMYAN L. O.; SIPYAGIN A. M.; KARTSEV V. G.; DOBROXOTOVA O+, XIMIYA GETEROTSIKL. SOED.,(1987) N 4, 468-473
作者:ALIEV Z. G.、 ATOVMYAN L. O.、 SIPYAGIN A. M.、 KARTSEV V. G.、 DOBROXOTOVA O+
DOI:——
日期:——
Regioselective Synthesis of 3-Hydroxy-4,5-alkyl-Substituted Pyridines Using 1,3-Enynes as Alkynes Surrogates
作者:Manuel Barday、Kelvin Y. T. Ho、Christopher T. Halsall、Christophe Aïssa
DOI:10.1021/acs.orglett.6b00451
日期:2016.4.15
The poor regioselectivity of the [4 + 2] cycloaddition of 3-azetidinones with internal alkynes bearing two alkyl substituents via nickel-catalyzed carbon–carbon activation is addressed using 1,3-enynes as substrates. The judicious choice of substitution on the enyne enables complementary access to each regioisomer of 3-hydroxy-4,5-alkyl-substituted pyridines, which are important building blocks in