Synthesis, reactions and stereochemistry of 3-hydroxymethyl-2,3-dihydro-4H-1,3-benzoxazin-4-one and some perhydrogenated derivatives
作者:Ferenc Fülöp、Kalevi Pihlaja、Imre Huber、Gábor Bernáth、Béla Ribár、Gyula Argay、Alajos Kálmán
DOI:10.1016/s0040-4020(01)81589-1
日期:1992.6
perhydrogenated derivatives were prepared from the corresponding 2-hydroxycarboxamides by treatment with a formaldehyde/formic acid mixture. Thermal decomposition of the 3-hydroxymethyl derivatives led to the previously unknown parent compounds. With one exception (14), both in the N-unsubstituted (16–18) and in the N-substituted (7–15) cyclopentane- and cyclohexane-fused derivatives the oxazinone ring
通过用甲醛/甲酸混合物处理,由相应的2-羟基羧酰胺制备3-羟甲基-2,3-二氢-4H-1,3-苯并恶嗪-4-酮及其许多氢化衍生物。3-羟甲基衍生物的热分解产生了以前未知的母体化合物。除一个例外(14)外,在N-未取代的(16-18)和在N-取代的(7-15)的环戊烷和环己烷稠合衍生物中,恶嗪酮环主要具有一个半椅构象。