Novel 1,2,4-Triphosphole, 1,2,3-Triphosphetene and Azaphospholene Derivatives from N -Heterocyclic Carbenes and Phosphaalkynes

Autor:	Roland Fröhlich, Lars Wittenbecher, D. Le Van, Michelle C. Moyes, Ernst-Ulrich Würthwein, T. Von Fehren, F. E. Hahn
Rok vydání:	2002
Předmět:	Inorganic Chemistry Quantum chemical Chemistry Stereochemistry Transition metal carbene complex Organic Chemistry Regioselectivity General Medicine Singlet state Biochemistry Medicinal chemistry
Zdroj:	Phosphorus, Sulfur, and Silicon and the Related Elements. 177:1863-1867
ISSN:	1563-5325 1042-6507
DOI:	10.1080/10426500212273
Popis:	The stable singlet carbenes N,N '-bis(2,2-dimethylpropyl)-benzimidazolin-2-ylidene 1 and 1,3,4,5-tetramethylimidazol-2-ylidene 2 react with phosphaalkynes P L C-- t Bu ( 3a ) or P L C--N i Pr 2 ( 3b ) regioselective to give the aromatic 1,2,4-triphosphole derivatives ( 1 or 2 + 3a M 6a or 6b , respectively) or 1,2,3-triphosphetene ( 1 + 3b M 7 ) or azaphospholene ( 2 + 3b M 9 ) in almost quantitative yields. The mechanisms of the surprising formation of compound 9 under C--H-activation was studied by quantum chemical DFT calculations.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::542996f923494bf38ad4ab1195c900ae https://doi.org/10.1080/10426500212273 Zobrazit plný text záznamu