112204-64-5Relevant academic research and scientific papers
1H-1,3-benzazaphospholes: The organometallic route and a new three-step synthesis with reductive ring closure
Bansal, Raj K.,Gupta, Neelima,Heinicke, Joachim,Nikonov, George N.,Saguitova, Farida,Sharma, Dinesh C.
, p. 264 - 269 (2007/10/03)
Primary and N-secondary 2-phosphanylanilines were synthesized via metallation of 2-bromoanilines, coupling with CIP(NMe2)2, alcoholysis and reduction with LiAlH4, and subsequently reacted with formimidoester hydrochloride to give 1,3-benzazaphospholes. For 1H-1,3-benzazaphospholes, a shorter alternative three-step synthesis was developed, based on N-acylation of 2-bromoaniline, NiCl2-catalyzed arylation of triethyl phosphite and a new reductive cyclization of amidophosphonic acid ester with excess LiAlH4.
Zur Synthese und Pyrolyse von Organoelement-benzasolderivativen des phosphors, Arsens, Siliciums und Zinns
Heinicke, Joachim
, p. C17 - C21 (2007/10/02)
3-Organo-1,3-benzazaphospholes and -benzazarsoles as well as 3,3-disubstituted 1,3-benzazasiloles and -benzazastannoles are prepared from o-LiC6H6N=C(li)But and the relevant organoelement dichlorides.The heterocycles obtained are converted by flash vacuum pyrolysis into the aromatic 1H-1,3-benzazaphospholes and benzazarsoles, respectively.
PHOSPHORUS COMPOUNDS WITH UNUSUAL COORDINATION - 20. 1,2,3,4-TRIAZAPHOSPHOLES BY -CYCLOADDITION OF AZIDES TO A STABLE PHOSPHAALKYNE
Roesch, Wolfgang,Facklam, Thomas,Regitz, Manfred
, p. 3247 - 3256 (2007/10/02)
The azides 2a-i undergo regiospecific -cycloaddition with the phosphaalkyne 1 to form the 1,2,3,4-triazaphospholes 3a-i; in the case of the reaction with 2j, an additional silyl shift occurs resulting in the formation of 4j.The latter product can be hydrolyzed to 6 which has also been prepared independently from 1 and hydrazoic acid (7).Flash vacuum pyrolyses of the 1,2,3,4-triazaphospholes 3c and 3e produce mixtures of the isomers 13a,b and 14a,b, respectively, from which the 1,2-azaphospholes 14 can be isolated as the major reaction products.
