Reaction of b-, g-, and d-Chloroalkanamides with Potassium tert-Butoxide in Tetrahydrofuran: Elimination, and Lactamization
摘要:
gamma-and delta-Chloroalkanamides were found to undergo lactamization readily when treated with potassium tert-butoxide in tetrahydrofuran. Raising the reaction temperature may encourage S(N)2 displacement reaction. On the other hand beta-chloroalkanamides only undergo elimination, followed by dimerization and trimerization of the acrylamide initially formed.
synthesized a novel series of piperidine propionamide derivatives as potent sigma-1 (σ1) receptor antagonists and mu (μ) opioid receptor agonists, and measured their affinity for σ1 and μ receptors in vitro through binding assays. The basic scaffold of the new compounds contained a 4-substituted piperidine ring and N-aryl propionamide. Compound 44, N-(2-(4-(4-fluorobenzyl) piperidin-1-yl) ethyl)-N-(4-methoxy-phenyl)
Synthesis of 2<i>H</i>-pyrano[2,3-<i>b</i>]quinolines. Part<b>I</b>
作者:Zoltán Cziáky、Péter Sebők
DOI:10.1002/jhet.5570310401
日期:1994.7
3-b]quinolines 5a-e and 2H-pyrano[2,3-b]quinolines 10a-c were synthesised starting from the appropriate ω-chloro-n-valeroylanilides 2a-e. Compounds 10a-c were transformed to analogs of the novelantihypertensiveagentCromakalim (1).
从合适的ω-氯-n-戊酰苯胺开始合成3,4-二氢-2 H-吡喃并[2,3 - b ]喹啉5a-e和2 H-吡喃并[2,3 - b ]喹啉10a-c。2a-e。将化合物10a-c转化为新型降压药克罗卡林(1)的类似物。