作者:Masood Parvez、Veejendra K. Yadav、Govindaraji Senthil
DOI:10.1107/s0108270100013597
日期:2001.1.15
6-Vinyl-1-oxa-4-thiaspiro[4.5]dec-6-ene has been reacted with dienophiles, such as N-phenylmaleimide (NPM), N-methyltriazoline-2,5-dione (MTAD) and dimethylacetylene dicarboxylate (DMAD), to assess the 1,3-diastereofacial selection caused by the acetal function. In each case, a mixture of two diastereoisomers was produced. The crystal structures of the products of the addition of NPM and MTAD syn to
6-乙烯基-1-氧杂-4-噻吩并[4.5]癸-6-烯已与亲二烯体反应,例如N-苯基马来酰亚胺(NPM),N-甲基三唑啉-2,5-二酮(MTAD)和二甲基乙炔二羧酸酯( DMAD),以评估由乙缩醛功能引起的1,3-非硬骨膜选择。在每种情况下,产生两种非对映异构体的混合物。NPM和MTAD syn加到乙缩醛氧,2-苯基-2,3,3a,4,5,5a,6,7,8,9,9a,9b-十二烷基-1H中的产物的晶体结构-苯并[e]异吲哚-6-螺-2'-[1',3']氧硫杂环戊烷-1,3-二酮,C20H21NO3S,(IIa)和2-甲基-5,7,8,9,10, 10a-六氢-1H-1,2,4-三唑并[1,2-a] cinnoline-7-spiro-2'-[1',3']氧硫杂环戊烷-1,3-二酮,C13H17N3O3S,(IIIa),分别是DMAD syn加到乙缩醛硫,二甲基1,2,3,4,4a,7-六氢萘