Diverse Modes of Reactivity of Dialkyl Azodicarboxylates with P(III) Compounds: Synthesis, Structure, and Reactivity of Products Other than the Morrison−Brunn−Huisgen Intermediate in a Mitsunobu-Type Reaction
作者:N. Satish Kumar、K. Praveen Kumar、K. V. P. Pavan Kumar、Praveen Kommana、Jagadese J. Vittal、K. C. Kumara Swamy
DOI:10.1021/jo035634d
日期:2004.3.1
shown that the previously reported azide derivative 3, obtained from the reaction of 11 with DIAD, undergoes a Curtius-type rearrangement to lead to the fused cyclodiphosphazane [CH2(6-t-Bu-4-Me-C6H2O)2}POC(O-i-Pr)NN(CO2-i-Pr)N}]2 (28); this compound is in equilibrium with its monomeric form in solution at >300 K. Finally, reaction of S(6-t-Bu-4-Me-C6H2O)2P(OPh) (13) with DIAD gave the hexacoordinate
探索了偶氮二羧酸二乙酯(DEAD)/偶氮二异丙基二异丙酯(DIAD)与带有氧或氮取代基的P(III)化合物的反应性。与结构的化合物相当不同从莫里森-Brunn的-胡伊斯根中间R”的3 P + N(CO 2 R)n的-(CO 2 R)(1)中,在光延反应观察到的,已通过使用X射线建立晶体学和NMR谱。因此与X(6- t -Bu-4-Me-C 6 H 2 O)2 P-NH- t -Bu [X = S(8),CH 2(9)]或XP(μ-N- t -Bu)2 P-NH- t -Bu [X = Cl(14)或NH- t -Bu(15)]和DEAD / DIAD导致膦氨酸氨基甲酸酯型的产品X 6- t -Bu-4-Me-C 6 H 2 O} 2 P N- t- Bu} N(CO 2 R)NH(CO 2 R)} [X = S,R = Et(16); X = CH 2,R = Et(17);X = CH