Mechanistic Studies of the Allylic Rearrangements of α-Silyloxy Allylic Silanes to Silyloxy Vinylic Silanes
作者:Angie I. Kim、Kyle L. Kimmel、Antonio Romero、Jacqueline H. Smitrovich、K. A. Woerpel
DOI:10.1021/jo070634p
日期:2007.8.1
Mechanistic evidence suggests that the Lewis acid-promoted allylicrearrangement of α-silyloxy allylic silanes proceeds along an ionic reaction pathway involving a contact ion pair. The driving force for this transformation is alleviation of steric congestion at the allylic position of the α-silyloxy allylic silane and stabilization of πcc by hyperconjugation.
Vinylsilane-mediated polyene cyclization. Synthesis of the octahydronaphthalenol portion of dihydrocompactin.
作者:Steven D. Burke、Jeffrey O. Saunders、Jeffrey A. Oplinger、Charles W. Murtiashaw
DOI:10.1016/s0040-4039(00)98414-4
日期:1985.1
A synthesis of the octahydronaphthalenol portion 12 of the HMG-CoA reductase inhibitor dihydrocompactin (1) is described wherein a vinylsilane-terminated polyenecyclization and variants of the Claisen rearrangement provide key elements of regio- and stereocontrol.
Stereoselective Synthesis of Highly Substituted γ-Lactams by the [3+2] Annulation of α-Siloxy Allylic Silanes with Chlorosulfonyl Isocyanate
作者:Antonio Romero、K. A. Woerpel
DOI:10.1021/ol060596g
日期:2006.5.1
A stereoselective synthesis of gamma-lactams by the [3+2] annulation of alpha-siloxy allylic silanes with N-chlorosulfonyl isocyanate (CISO2NCO) was developed. The use of these allylic silanes allowed for further diastereoselective substitution of the resultant N,O-acetal to give highly substituted gamma-lactams. Oxidation of the silyl group afforded access to complex beta-hydroxy-gamma-lactams.
Panek, James S.; Cirillo, Pier F., Journal of the American Chemical Society, 1990, vol. 112, # 12, p. 4873 - 4878
作者:Panek, James S.、Cirillo, Pier F.
DOI:——
日期:——
SATO, SUSUMU;MATSUDA, ISAMU;IZUMI, YUSUKE, J. ORGANOMET. CHEM., 344,(1988) N 1, 71-88