Although it is limited to electron-rich aromatic compounds, the combination of a hydrosilane, an ester, and the ruthenium cluster provides a good method to introduce a primary alkyl group to the aromatic compound.doi:10.1002/chin.201207033
(S)-NIFE has been extensively used for amino acids,55substituted phenylalanine derivatives,56unnatural sterically constrained secondaryα-amino acids, “imino acids,57” β-alkyl-substituted amino acids,58α-substituted proline analogs,59as well as amino alcohols, nonprotein amino acids, and ...
Direct asymmetric reductive amination is one of the most efficient methods for the construction of chiral amines, in which the scope of the applicable amine coupling partners remains a significant challenge. In this study we describe primary alkyl amines
Unsubstituted or substituted alicyclic or aliphatic polyamines which, in addition to a primary amino group sterically hindered by one α-alkyl group or by two α-alkyl groups, also contain at least one further primary amino group are particularly preferred. Polyamines, which are based on formula...
An air-stable, primary alkylphosphine:FcCH2PH2 [Fc =(η5-C5H5)Fe(η5-C5H4)] 来自 RSC publishing 喜欢 0 阅读量: 4 摘要: Sodium metabisulfite-mediated elimination of formaldehyde from the ferrocene-derived hydroxymethylphosphine FcCH 2 P(CH 2 OH) 2 yields the primary phosphine FcCH 2 ...
Verwendung von blockcopolyestern mit polyalkylenglykolbloecken als glaettemittel in spinnpraeparationen , of block copolyesters of the formula (A-COO)m-B in which A is a complex monocarboxylic-acid group and B an m-hydric poly(ether alcohol) group with a mean molecular weight of 400 to ...
(R’ = alkyl, aryl; R = H, Me) and other boron-containing compounds are left in the residual. Then, add 15 mL water into the flask and stir for 15 min. Addition of ethyl acetate extract the product (7–8 times) and the organic phases are collected and dried. The ...
Primary alkyl halides (RCHX) react faster than secondary alkyl halides (RR′CHX), which in turn react faster than tertiary alkyl halides (RR′R″CX). When the substituents R, R′, and R″ are small—e.g., R = R′ = R″ = H in CHX—the transition state is not very crowded,…...
Oxidation of alkylamines (2 R = But, Me and PhCH2) with arenesulfonyl peroxides bearing an electron-withdrawing group gave the arenesulfonyloxyamines in good yields (Scheme 6).20 A similar reaction of primary amines with dibenzoyl peroxide gave benzoyloxyamines.21 Sign in to download full-size...
Related to Primary amines:Amino functional group a·mine (ə-mēn′, ăm′ēn) n. Any of a group of organic compounds of nitrogen, such as ethylamine, C2H5NH2, that may be considered ammonia derivatives in which one or more hydrogen atoms have been replaced by a hydrocarbon group. ...