Unusual nitrogen based heterocycles via allenic intermediates from the reaction of propargyl alcohols with P(III) substrates
作者:G. Gangadhararao、K.C. Kumara Swamy
DOI:10.1016/j.tet.2014.02.064
日期:2014.4
The apparently simple reaction of the P(III) precursors [(RNH)P(μ-N-t-Bu)2PY] (Y=NH-t-Bu, Cl), (OCH2CMe2CH2O)PCl, and Ph2PCl with functionalized propargyl alcohols is examined. In most cases, the final products are not the expected allenes but several previously unpredicted structural motifs, such as substituted oxazabenzocycloheptenones, indolinones, and fused heterocycles as revealed by X-ray crystallography
P(III)前体[(RNH)P(μ-N- t - Bu)2 PY ](Y = NH- t- Bu,Cl),(OCH 2 CMe 2 CH 2 O)PCl的表面反应很简单和Ph 2检查具有官能化炔丙醇的PC1。在大多数情况下,最终产品不是预期的异戊烯,而是一些以前无法预测的结构基序,例如X射线晶体学显示的取代的氧杂苯并环庚烯酮,吲哚满酮和稠合杂环。还讨论了这些新颖反应的机理方面,以及可能的用途和产物的结构化学。许多这些化合物的P–C或P–N键断裂导致产生无磷的2-取代的吲哚,喹啉酮和四氢idine啶。