ANTINEOPLASTIC AGENTS: XVII. N-(2-BROMOETHYL)-N-(2-CHLOROETHYL)AMINES
作者:George R. Pettit、Maurice R. Chamberland
DOI:10.1139/v66-116
日期:1966.4.1
A convenient synthesis (I → IVa) starting with N-bis(2-chloroethyl)amine has been devised for obtaining N-(2-bromoethyl)-N-(2-chloroethyl)amine. Several N-alkyl (IVb and VIII) and N-benzyl (VII) derivatives of the unsymmetrically halogenated amine (IVa) were prepared for cancer chemotherapeutic evaluation.
P-Stereogenic PN(H)P Iron(II) Catalysts for the Asymmetric Hydrogenation of Ketones: The Importance of Non-Covalent Interactions in Rational Ligand Design by Computation
The P‐stereogenic PN(H)P pincer ligands (R(Me)PCH2CH2)2NH (R=Cy, (S,S)‐1 a; R=tBu, (S,S)‐1 b; R=Ph, (R,R)‐1c) and their iron(II) derivatives [FeBr2(CO)(PN(H)P)] (2 a–2 c) and [FeHBr(CO)(PN(H)P)] (3 a–3 c) were developed by DFT‐driven ligand design. In a preliminary study, the P(Cy)Me‐based pincer (S,S)‐1 a and its Fe(II) complex 3 a were prepared, tested in the asymmetric transfer hydrogenation of
P-立体异构PN(H)P钳位配体(R(Me)PCH 2 CH 2)2 NH(R = Cy,(S,S)-1 a ; R = t Bu,(S,S)-1 b ; R = Ph,(R,R)-1 c)及其铁(II)衍生物[FeBr 2(CO)(PN(H)P)](2 a – 2 c)和[FeHBr(CO)(PN) (H)P)](3 a – 3 c)是由DFT驱动的配体设计开发的。在一项初步研究中,基于P(Cy)Me的钳(S,S)-1 a及其Fe(II)配合物3 a制备,在苯乙酮的不对称转移氢化中进行测试,并通过密度泛函理论(DFT)进行研究。根据实验对映选择性与计算对映选择性之间的良好一致性,尝试通过DFT对钳进行合理设计,这表明叔丁基和苯基类似物3b和3c具有较高的对映选择性。因此,一种新的合成协议是为(发达R,R - )1c中使用博诺的(小号) - (1-(OH)的Et)P(Me)的Ph⋅BH 3为P-立体合成子。与DFT预测相反,3