氧化腈2与3-二乙氨基4(4甲氧基苯基)-异噻唑1,1二氧化物(1)反应,通过高度区域选择性的1,3-偶极环加成反应提供了异噻唑啉[5,4- d ]异恶唑啉4,4二氧化物3。还原3得到相应形式的5-(氨基-芳基亚甲基]-二氢异噻唑1,1-二氧化物4/5的E和Z形式的混合物,将其转化为5-酰基-二氢异噻唑1,1-二氧化物6。以及相应的脱水产物7.化合物3f易于转化为5-氰基异噻唑1,1-二氧化物11
Δ<sup>2</sup>-Isoxazoline derivatives. Part X. 1,3-Dipolar cycloadditions of nitrones and nitrile oxides with indene, 1,2-dihydronaphthalene, and trans-1-phenylpropene
作者:Giorgio Bianchi、Carlo De Micheli、Remo Gandolfi
DOI:10.1039/p19760001518
日期:——
Reactions of cyclic and acyclic nitrones and nitrileoxides with 1,2-dihydronaphthalene, indene, and trans-1-phenylpropene give rise to mixtures of regioisomers. The results are analysed on the basis of frontier orbital interactions and the steric requirements of reagents.