据报道,使用甲醇将芳香胺与RuHCl(CO)(PN H P)(PN H P =双(2-二苯基膦基乙基)胺)选择性甲基化。在KO t Bu(20-60 mol%)存在的情况下,各种芳香胺在150°C下以极低的催化剂负载量(0.02-0.1 mol%)以高收率转化成它们相应的单甲基化仲胺。将催化剂前体RuHCl(CO)(PN H P)转化为[RuH(CO)2(PN H P)] +在催化条件下,也可作为高效催化剂。即使在反应条件下(其中CO从甲醇中释放出来),该催化剂的坚固性也有助于其出色的催化活性。
Synthesis of <i>N</i>-methylated amines from acyl azides using methanol
作者:Kaushik Chakrabarti、Kuheli Dutta、Sabuj Kundu
DOI:10.1039/d0ob01303j
日期:——
derivatives into N-methylamines was developed using methanol as the C1 source via the one-pot Curtius rearrangement and borrowing hydrogen methodology. Following this protocol, various functionalised N-methylated amines were synthesized using the (NNN)Ru(II) complex from carboxylic acids via an acyl azide intermediate. Several kinetic studies and DFT calculations were carried out to support the mechanism
使用甲醇作为 C1 源,通过一锅 Curtius 重排和借氢方法,将酰基叠氮化物衍生物转化为N-甲胺。按照该协议,使用 (NNN)Ru( II ) 配合物从羧酸通过酰基叠氮化物中间体合成各种功能化的N-甲基化胺。进行了几项动力学研究和 DFT 计算以支持该机制,并确定 Ru( II ) 配合物和碱在这种转变中的作用。
SULFONYL-PYRROLIDINE DERIVATIVES USEFUL FOR THE TREATMENT OF NEUROLOGICAL DISORDERS
申请人:F. HOFFMANN-LA ROCHE AG
公开号:EP1299383A1
公开(公告)日:2003-04-09
[EN] SULFONYL-PYRROLIDINE DERIVATIVES USEFUL FOR THE TREATMENT OF NEUROLOGICAL DISORDERS<br/>[FR] DERIVES DE SULFONYL-PYRROLIDINE UTILISES DANS LE TRAITEMENT DES TROUBLES NEUROLOGIQUES
申请人:HOFFMANN LA ROCHE
公开号:WO2002002554A1
公开(公告)日:2002-01-10
The invention relates to compounds which are represented by the general formula (I) wherein R?1, R2, R3¿ and n are as defined in the specification. The invention further relates to medicaments containing these compounds and to a process for their preparation. The compounds possess affinity towards metabotropic glutamate receptors and are therefore useful in the treatment or prevention of acute and/or chronic neurological disorders.
<i>N</i>-Monomethylation of Aromatic Amines with Methanol via PN<sup>H</sup>P-Pincer Ru Catalysts
methanol for the selective methylation of aromaticamines with RuHCl(CO)(PNHP) (PNHP = bis(2-diphenylphosphinoethyl)amine) is reported. Various aromaticamines were transformed into their corresponding monomethylated secondary amines in high yields at 150 °C with a very low catalyst loading (0.02–0.1 mol %) in the presence of KOtBu (20–60 mol %). The catalyst precursor, RuHCl(CO)(PNHP), was converted
据报道,使用甲醇将芳香胺与RuHCl(CO)(PN H P)(PN H P =双(2-二苯基膦基乙基)胺)选择性甲基化。在KO t Bu(20-60 mol%)存在的情况下,各种芳香胺在150°C下以极低的催化剂负载量(0.02-0.1 mol%)以高收率转化成它们相应的单甲基化仲胺。将催化剂前体RuHCl(CO)(PN H P)转化为[RuH(CO)2(PN H P)] +在催化条件下,也可作为高效催化剂。即使在反应条件下(其中CO从甲醇中释放出来),该催化剂的坚固性也有助于其出色的催化活性。