1766-28-5Relevant articles and documents
Manganese(I)-Catalyzed β-Methylation of Alcohols Using Methanol as C1 Source
Kaithal, Akash,van Bonn, Pit,H?lscher, Markus,Leitner, Walter
supporting information, p. 215 - 220 (2019/12/03)
Highly selective β-methylation of alcohols was achieved using an earth-abundant first row transition metal in the air stable molecular manganese complex [Mn(CO)2Br[HN(C2H4PiPr2)2]] 1 ([HN(C2H4PiPr2)2]=MACHO-iPr). The reaction requires only low loadings of 1 (0.5 mol %), methanolate as base and MeOH as methylation reagent as well as solvent. Various alcohols were β-methylated with very good selectivity (>99 %) and excellent yield (up to 94 %). Biomass derived aliphatic alcohols and diols were also selectively methylated on the β-position, opening a pathway to “biohybrid” molecules constructed entirely from non-fossil carbon. Mechanistic studies indicate that the reaction proceeds through a borrowing hydrogen pathway involving metal–ligand cooperation at the Mn-pincer complex. This transformation provides a convenient, economical, and environmentally benign pathway for the selective C?C bond formation with potential applications for the preparation of advanced biofuels, fine chemicals, and biologically active molecules.
Halogen-bonded iodonium ion catalysis: A route to α-hydroxy ketones: Via domino oxidations of secondary alcohols and aliphatic C-H bonds with high selectivity and control
Guha, Somraj,Kazi, Imran,Mukherjee, Pranamita,Sekar, Govindasamy
supporting information, p. 10942 - 10945 (2017/10/13)
A domino synthesis of α-hydroxy ketones has been developed from benzylic secondary alcohols employing catalytic iodonium ions stabilized by DMSO. The reaction proceeds through an unprecedented sequential oxidation of alcohols to ketone and its α-hydroxylation in a controlled manner. The spectroscopic evidence establishes the possibility of formation of a stable halogen-bonded adduct between DMSO and iodonium ions.
ALPHA-METHYLBENZYL-CONTAINING THIOUREA INHIBITORS OF HERPES VIRUSES CONTAINING A PHENYLENEDIAMINE GROUP
-
Page 72, (2010/02/06)
-