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Reaktive EC(p‐p)π‐Systeme, XXVI. Einfache Synthese für Methylenphosphane (Phosphaalkene) des Typs HPC(F)NR 2 und das Phosphaalkin PC‐N(iPr) 2
Author(s) -
Grobe Joseph,
Van Duc Le,
Lüth Bettina,
Hegemann Marianne
Publication year - 1990
Publication title -
chemische berichte
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 0009-2940
DOI - 10.1002/cber.19901231213
Subject(s) - chemistry , molar ratio , amine gas treating , isopropyl , piperidine , medicinal chemistry , stereochemistry , organic chemistry , catalysis
Reactive EC(p‐p)π‐Systems, XXVI. — Facile Synthesis of Phosphaalkenes of the Type HPC(F)NR 2 and the Phosphaalkyne PC‐N(iPr) 2 The reaction of trifluoromethylphosphane CF 3 PH 2 with secondary amines in a 1:3 molar ratio leads to the novel methylenephosphanes (phosphaalkenes) HP C(F)NR 2 [R Me ( 1 ), Et ( 2 ), Pr ( 3 ), piperidine ( 4 )] in yields between 40 and 60%. The analogous deuterium compound DP C(F)NEt 2 ( 5 ) is formed by the reaction of CF 3 PD 2 with Et 2 ND. However, with di(isopropyl)amine the new phosphaalkyne P CN(iPr) 2 ( 6 ) is produced instead of the expected phosphaalkene.