Efficient Synthesis of Naphtho[1,2-<i>e</i>][1,3]oxazine Derivatives via a Chemoselective Reaction with the Aid of Low-Valent Titanium Reagent
作者:Daqing Shi、Shaofeng Rong、Guolan Dou、Manman Wang
DOI:10.1021/cc900073w
日期:2010.1.11
A series of new naphtho[1,2-e][1,3]oxazine derivatives such as trans-1,3-diaryl-1H-naphtho[1,2-e][1,3]oxazine-2(3H)-carbonyl chloride, 1-aryl-2-benzyl-1,2- dihydronaphtho[1,2-e][1,3]oxazine-3-one, and trans-1,3-diaryl-1H-naphtho[1,2-e] [1,3]oxazine-2(3H)-carbaldehyde were selectively synthesized via a chemoselective reaction of 1,3-diaryl-2,3-dihydro-1H-naphtho[1,2-e][1,3]oxazines and triphosgene or
一系列新的萘并[1,2- e ] [1,3]恶嗪衍生物,例如反式-1,3-二芳基-1 H-萘并[1,2- e ] [1,3]恶嗪-2(3 H)-羰基氯,1-芳基-2-苄基-1,2-二氢萘并[1,2- e ] [1,3]恶嗪-3-酮和反式-1,3-二芳基-1 H-萘并通过1,2-三芳基-2,3-二氢-1H-萘[1,2- ]的化学选择反应选择性合成[1,2- e ] [1,3]恶嗪-2(3 H)-甲醛。Ë] [1,3]恶嗪和三光气或原甲酸三乙酯分别由不同的低价钛系统诱导。该方法具有反应时间短(15分钟),操作方便,化学选择性高的优点。