具有桥头氮的化合物。第54部分。过氢噻唑并[3,4- a ]吡啶的一些衍生物的立体化学和9,methylperhydro-3,8-methano-1,3-thiazocines的合成
摘要:
全氢噻唑并[3,4- a ]吡啶和相应的6-乙基取代的衍生物的构象平衡位置(CDCl 3溶液; 298K)已经通过1 H和13 C nmr光谱法测定。已报道的通过1-溴-1-(2-哌啶基)乙烷氢溴酸盐合成1-甲基过氢噻唑并[3,4- a ]吡啶的异构体还另外得到了异构体9-甲基过氢-3,8-甲氧基-1,3-噻唑啉。与较早的报道相反,发现反式-(1H,8aH)-1-甲基全氢噻唑并[3,4- a ]吡啶具有87%的反式fused13%的顺式构象平衡(CDCl 3; 193 K)。
CRABB, TREVOR A.;TRETHEWEY, ANDREW N.;TAKEUCHI, YOSHITO, J. CHEM. SOC. PERKIN TRANS.,(1988) N 5, 1173-1178
作者:CRABB, TREVOR A.、TRETHEWEY, ANDREW N.、TAKEUCHI, YOSHITO
DOI:——
日期:——
Compounds with bridgehead nitrogen. Part 54. The stereochemistry of some derivatives of perhydrothiazolo[3,4-a]pyridine and the synthesis of 9-methylperhydro-3,8-methano-1,3-thiazocines
作者:Trevor A. Crabb、Andrew N. Trethewey、Yoshito Takeuchi
DOI:10.1039/p19880001173
日期:——
perhydrothiazolo[3,4-a]pyridine and the corresponding 6-ethyl-substituted derivatives have been determined by 1H and 13C n.m.r. spectroscopy. The reported synthesis of the 1-methylperhydrothiazolo[3,4-a]pyridines via 1-bromo-1-(2-piperidyl)ethane hydrobromide gave in addition the isomeric 9-methylperhydro-3,8-methano-1,3thiazocines. Contrary to an earlier report trans-(1H,8aH)-1-methylperhydrothiazolo[3,4-a]pyridine
全氢噻唑并[3,4- a ]吡啶和相应的6-乙基取代的衍生物的构象平衡位置(CDCl 3溶液; 298K)已经通过1 H和13 C nmr光谱法测定。已报道的通过1-溴-1-(2-哌啶基)乙烷氢溴酸盐合成1-甲基过氢噻唑并[3,4- a ]吡啶的异构体还另外得到了异构体9-甲基过氢-3,8-甲氧基-1,3-噻唑啉。与较早的报道相反,发现反式-(1H,8aH)-1-甲基全氢噻唑并[3,4- a ]吡啶具有87%的反式fused13%的顺式构象平衡(CDCl 3; 193 K)。