A Novel, One-Pot Four-Component Route to 2′-Thioxo-2′,3′-dihydrospiro[indole-3,6′-[1,3]thiazin]-2-one Derivatives
作者:Abdolali Alizadeh、Javad Mokhtari
DOI:10.1002/hlca.201000419
日期:2011.7
efficient route to 2′,3′‐dihydro‐2′‐thioxospiro[indole‐3,6′‐[1,3]thiazin]‐2(1H)‐one derivatives is described. It involves the reaction of isatine, 1‐phenyl‐2‐(1,1,1‐triphenyl‐λ5‐phosphanylidene)ethan‐1‐one, and different amines in the presence of CS2 in dry MeOH at reflux (Scheme 1). The alkyl carbamodithioate, which results from the addition of the amine to CS2, is added to the α,β‐unsaturated ketone, resulting
描述了获得2',3'-dihydro-2'-thioxospiro [吲哚-3,6'-[1,3]噻嗪] -2(1 H)-一衍生物的有效途径。它涉及靛红的反应中,1-苯基-2-(1,1,1-三苯基λ 5 -phosphanylidene)乙-1-酮,和在CS的存在下不同的胺2在无水MeOH在回流下(方案1)。烷基carbamodithioate,其从加入胺到CS结果2,被添加到α,β不饱和酮,从1之间苯基-2-反应(1,1,1-三苯基所得的λ 5 -苯并亚砜基] -1-酮和异丁胺,生成3'-烷基-2',3'-二氢-4'-苯基-2'-硫代螺螺[吲哚-3,6'-[1,3]噻嗪] ‐2(1H)-一类具有优异收率的衍生物(方案2)。其结构在光谱学上得到了证实(IR,1 H和13 C-NMR,以及EI-MS)和元素分析得到了证实。