42226-36-8Relevant articles and documents
Improved Synthesis of Asymmetrical Substituted 1 H-1,2,4-Diazaphospholes
Liu, Qiaoyun,Wu, Jing,Li, Junfei,Wang, Junwen,Zheng, Wenjun,Roesky, Herbert W.
supporting information, p. 1455 - 1466 (2015/10/29)
The reaction of tris(trimethylsilyl)phosphine and a mixture of two different N,N-dimethylalkylamides (1a,b), followed by the treatment with dry hydrazine in situ, resulted in seven asymmetrical 3,5-disubstituted 1H-1,2,4-diazaphospholes (3a-g). Compounds
Phosphorus Compounds with Unusual Coordination, 31. Cycloaddition of Diazo Compounds onto a P - Chloro-phosphaalkene
Schnurr, Werner,Regitz, Manfred
, p. 1285 - 1292 (2007/10/02)
Chloro bis(trimethylsilyl)methylene phosphane (4) reacts with the diazo compounds 5, 10, 15 and 20 even at low temperatures with formation of the 3H-1,2,4-diazaphospholes 6, 11, 16 and 21.The products are unstable and decompose either with elimination of nitrogen to yield 1-chlorophosphiranes (9, 14, 19 and 22), or isomerize with aromatization (11-->13) or transformation into 4,5-dihydro-1,2,4-diazaphospholes (6-->8, 16-->18) by trimethylsilyl shifts.Silyl groups attached to ring nitrogen are easily hydrolized (8-->7, 13-->12, 18-->17), those attached to ring carbon are cleaved by treatment with potassium fluoride in dimethyl formamide (7-->23, 12-->24). - Keywords: Chloro-methylene Phosphanes, Diazo Compounds, 1,2,4-Diazaphospholes, 1-Chlorophosphiranes
1H-1,2,4-Diazaphosphole ueber 2-Phosphaallylchloride
Schmidpeter, Alfred,Willhalm, Angela
, p. 901 - 902 (2007/10/02)
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