概述了低价钛诱导的羰基还原偶合反应作为环化关键步骤在西松烷型二萜天然产物全合成中的应用。
The application of carbonyl reductive coupling reaction induced by low valent titanium as the crucial macrocyclization in the total syntheses of cembrane- type diterpenoids are reviewed.
方法以对硝基苯甲酰氯为起始原料，经缩合、还原、重氮化、偶合、成盐等反应制得巴柳氮二钠。
METHODS Balsalazide disodium was synthesized by reactions of condensation , reduction, diazotization , coupling and salification from 4-nitrobenzoyl chloride.
以2 - 氯- 4 - 硝基苯胺为原料，先经过重氮化、偶合反应合成出对硝基偶氮苯，经还原后再进行重氮化与偶合反应制备出最终产品分散黄104 。
Disperse 104 was synthesized by a process starting from diazotization of 2-chrolo-4-nitroaniline, followed by coupling, reduction; and then re-diazotization and re-coupling.
以2 - 氯- 4 - 硝基苯胺为原料，先经过重氮化、偶合反应合成出对硝基偶氮苯，经还原后再进行重氮化与偶合反应制备出最终产品分散黄104 。
Disperse 104 was synthesized by a process starting from diazotization of 2-chrolo-4-nitroaniline, followed by coupling, reduction; and then re-diazotization and re-coupling.
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