types of heterocyclic compounds. In these reactions, 1-3 act as hidden dienes and participate in hetero-Diels-Alder (DA) reactions, a feature that has been only rarely reported for heavier pnictogen compounds. In this way, reactions of 1 furnished the set of 1-arsanaphthalenes 4-6. The most likely mechanism involves two steps, that is, an arsa-DA reaction giving a 1-arsa-1,4-dihydro-iminonaphthalene
N,C,N螯合的有机光子(I)化合物ArE(1-3)(Ar = 2,6-(RN = CH)2 C6 H3,E / R = As / Dmp(1),Sb / tBu的处理(2)和Bi / tBu(3),其中Dmp = 2,6-Me2 C6 H3)具有各种缺电子
炔烃RC≡CR'(R / R'=
CO2 Me(
DMAD),R / R'= H / CO 2 Me,或R / R'= NC 5 F 4)提供不同类型的
杂环化合物。在这些反应中,1-3充当隐藏的二烯,并参与异Diels-Alder(
DA)反应,只有较重的光生原化合物才报道过此功能。以这种方式,反应1提供了一组1-ar
萘4-6。最可能的机理涉及两个步骤,即通过arsa-
DA反应生成1-arsa-1,4-dihydro-iminonaphthalene,然后进行CH→NH质子迁移。相反,在
锑类似物2的情况下,该反应序列在第一步终止 从而得到1-stiba-1