Access to -2,5-disubstituted iodovinyltetrahydrofurans via the cyclization of γ-silyloxyallenes using n-iodosuccinimide
摘要:
Treatment of gamma-(tert-butyldimethylsiloxy)- or gamma-(trimethylsiloxy)allenes bearing various groups at the ether carbon with N-iodosuccinimide resulted in the formation of iodocyclization products, 1-iodo-1-(tetrahydrofuran-2'-yl)ethenes, in good yields and with high selectivity for the cis diastereomer.
Preparation of 2-(Tetrahydrofuran-2′-YL)-l,4-Pentadienes From γ-Allenyl Alcohols via Oxymercuration Followed by Palladium(II)-Medlated all Ylation
作者:Robert D. Walkup、Lufeng Guan
DOI:10.1080/00397919208019290
日期:1992.4
Abstract Intramolecular oxymercurations of γ-hydroxy- or γ-silyloxyallenes yielded α-(tetrahydrofuran-2-yl)vinylmercury intermediates which underwent coupling with allylic halides in the presence of palladium(II) chloride. The yields of the resulting 2-(tetrahydrofuran-2′-yl)-1,4-pentadienes diminished when either the vinylmercury compound or the allylic halide was substituted.
WALKUP R. D.; PARK G., TETRAHEDRON LETT., 28,(1987) N 10, 1023-1026
作者:WALKUP R. D.、 PARK G.
DOI:——
日期:——
Stereoselectivity in the syntheses of substituted 2-(2-tetrahydrofuranyl)acrylates via intramolecular oxymercurations or oxypalladations of allenes
作者:Robert D Walkup、Gyoosoon Park
DOI:10.1016/s0040-4039(00)95901-x
日期:1987.1
underwent oxymetallations in the presence of mercury(II) or palladium(II) to form tetrahydrofuranyl vinylmetal complexes which could undergo palladium-mediated carbonylations in methanol to form methyl 2-(2-tetrahydrofuranyl)acrylates. The oxymercurations of the silyloxy allenes proceeded with high selectivity.
Access to -2,5-disubstituted iodovinyltetrahydrofurans via the cyclization of γ-silyloxyallenes using n-iodosuccinimide
作者:Robert D Walkup、Lufeng Guan、Sang Woong Kim、Young Soo Kim
DOI:10.1016/0040-4039(92)88075-g
日期:1992.7
Treatment of gamma-(tert-butyldimethylsiloxy)- or gamma-(trimethylsiloxy)allenes bearing various groups at the ether carbon with N-iodosuccinimide resulted in the formation of iodocyclization products, 1-iodo-1-(tetrahydrofuran-2'-yl)ethenes, in good yields and with high selectivity for the cis diastereomer.