The type 2 intramolecular imino Diels-Alder reaction. Synthesis and structural characterization of bicyclo[n.3.1] bridgehead olefin/bridgehead lactams
作者:Timothy G. Lease、K. J. Shea
DOI:10.1021/ja00059a022
日期:1993.3
for the synthesis of a homologous series of bridgehead olefin-bridgehead lactams. The X-ray crystal structures of three members of this series, including the highly strained 2-carbomethoxy-8-oxo-2-azabicyclo[3.3.1]non-4-ene, were obtained. An analysis of the structural data permits evaluation of the response of the bridgehead double bond and bridgeheadamide linkages to similar torsional distorsions
2 型亚氨基 Diels-Alder 环加成反应用于合成同系列的桥头烯烃-桥头内酰胺。获得了该系列的三个成员的 X 射线晶体结构,包括高度应变的 2-carbomethoxy-8-oxo-2-azabicyclo[3.3.1]non-4-ene。对结构数据的分析允许评估桥头双键和桥头酰胺键对类似扭转变形的响应
The Diels-Alder reaction with 6-methylene-7-octenoic acid, a functionalised butadiene
作者:G. Cardinale、J. A. M. Laan、J. P. Ward
DOI:10.1002/recl.19871060205
日期:——
A novel functionalisedbutadiene, 6-methylene-7-octenoicacid, was synthesized from myrcene (7-methyl-3-methylene-1,6-octadiene). Diels-Alder adducts were formed with maleic anhydride and cyclopentene-3,5-dione.
Type 2 Intramolecular <i>N</i>-Acylnitroso Diels−Alder Reaction: Stereoselective Synthesis of Bridged Bicyclic Oxazinolactams
作者:Chun P. Chow、Kenneth J. Shea、Steven M. Sparks
DOI:10.1021/ol026075k
日期:2002.8.1
[reaction: see text] The type 2 intramolecular N-acylnitroso Diels-Alderreaction has been employed for the synthesis of substituted bridged bicyclic oxazinolactams. Upon oxidation of hydroxamic acid 6, a 3-benzylated oxazinolactam (7) was synthesized with complete diastereoselectivity. Elaboration of cycloadduct 7 liberated a cis-3,7-disubstituted azocin-2-one (9).