Reactions of (CF3)2BNMe2 with Grignard and related reagents. Crystal and molecular structure of (CF3)(Mes)FBFCNMe2 and Ph3PCH2(CF3)2BNMe2
作者:David J. Brauer、Hans Bu¨rger、Thomas Dittmar、Gottfried Pawelke、Ju¨rgen Rothe
DOI:10.1016/s0022-328x(96)06400-5
日期:1996.11
Dimethylaminobis(trifluoromethyl)borane, (CF3)2BNMe2 (A), reacts with Grignard reagents RMgBr to yield, after hydrolysis, the dimethylamine boranes R(CF3)2B NHMe2 (R = Me (I), Et(II),iPr(III), -CH2CH=CH2 (IV), Ph (V),pTol (VI),oTol (VII),pClC6H4 (VIII) and −CCH (IX)). Alkylnytrimethylstannanes Me3SnCCR (R = Ph,nBu) add toA across the BN double bond and yield (RCC)(CF3)2B·NMe2SnMe3, the hydrolysis of
二甲基氨基双(三氟甲基)硼烷(CF 3)2 BNMe 2(A)与格氏试剂RMgBr反应生成水解后的二甲胺硼烷R(CF 3)2 B NHMe 2(R = Me(I),Et(II),i Pr(III),-CH 2 CH = CH 2(IV),Ph(V),p Tol(VI),o Tol(VII),p ClC 6 H 4(VIII))和-CCH(IX))。烷基三甲基stannanes Me 3 SnCCR(R = Ph,n Bu)通过BN双键加到A中并产生(RCC)(CF 3)2 B·NMe 2 SnMe 3,水解后得到(PhCC)(CF 3)2 B·NHMe 2(X)和(n BuCC)(CF 3)2 B·NHMe 2(XI)。相比之下,异亚丙基溴化镁与A反应生成(CF 3)(Mes)FBFCNMe 2(XII),其水解得到(CF 3)(Mes)FBC(O)NHMe 2(XIII)。在磷基中,只有Ph