A [3 + 3] Annelation Approach to (+)-Rhopaloic Acid B
摘要:
A general and enantiospecific [3 + 3] reaction toward functionalized pyrans is reported that has been employed in the first enantioselective synthesis of (+)-rhopaloic acid B.
Addition of 2-(chloromagnesiomethyl)2-alkenyl ethers to epoxides followed by Pd(0)-catalyzed cyclization: a one-pot synthesis of 3-methylenetetrahydropyrans
作者:Jaap van der Louw、Juul L. van der Baan、Gerardus J.J. Out、Franciscus J.J. de Kanter、Friedrich Bickelhaupt、Gerhard W. Klumpp
DOI:10.1016/s0040-4020(01)92281-1
日期:1992.11
Addition of 2-(chloromagnesiomethyl)-2-propenyl ethers 1a and 1b to epoxides 3 affords ring opening products 6 or 7 which are converted by Pd(0) to 3-methylenetetrahydropyrans 9. Cyclization of the addition products is best effected by a catalyst system generated in situ from Pd(OAc)2 and (i-PrO)3P.
Addition of 2-(phenoxymethyl)-2-propenylmagnesium chloride to epoxides followed by Pd(0)-catalyzed cyclization: A one-pot synthesis of 3-methylenetetrahydropyrans
作者:J. van der Louw、G.J.J. Out、J.L. van der Baan、F.J.J. de Kanter、F. Bickelhaupt、G.W. Klumpp
DOI:10.1016/s0040-4039(01)80529-3
日期:1989.1
LOUW, J. VAN DER;OUT, G. J. J.;VAN, DER BAAN J. L;E, KANTER F. J. J. BICK+, TETRAHEDRON LETT., 30,(1989) N6, C. 4863-4866
作者:LOUW, J. VAN DER、OUT, G. J. J.、VAN, DER BAAN J. L、E, KANTER F. J. J. BICK+
DOI:——
日期:——
A [3 + 3] Annelation Approach to (+)-Rhopaloic Acid B
作者:Julien C. R. Brioche、Katharine M. Goodenough、David J. Whatrup、Joseph P. A. Harrity
DOI:10.1021/ol701553j
日期:2007.9.1
A general and enantiospecific [3 + 3] reaction toward functionalized pyrans is reported that has been employed in the first enantioselective synthesis of (+)-rhopaloic acid B.