The fulvene complex (η-C5Me4CH2 )Re(CO)2(C6F5) 1a reacts with alkyl phosphines to yield the zwitterionic species (η-C5Me4CH2 PR3)Re(CO)2(C6F 5) 2 (R = Me, Et, Pr). Reaction of the analogous iodo complex (η-C5Me4CH2 )Re(CO)2I, 1b, with PMe3 and PEt3 affords the cationic species [(η-C5Me4CH2 (PR3))Re(CO)2(PR3)] + I 3 (R = Me, Et). However, reaction of 1b with P Pr3 yields the zwitterion (η-C5Me4C...

a new facile route for synthesis of 3- (aryl) -8, 9- di (alkyl) thieno [3,2-e] [1,2,4] triazolo pyrimidines derivative from the same starting material, 2- amino - 4,5 -di (alkyl) thiophene-3- carboxamide, has been developed through heterocyclization of the corresponding arylidene-hydrazino -5,6 -di (alkyl) thieno [2,3-d] pyrimidine under refluxing condition with acetic anhydride followed by air...

BACKGROUND Biocatalytic processes often require a full recycling of biocatalysts to optimize economic benefits and minimize waste disposal. Immobilization of biocatalysts onto particulate carriers has been widely explored as an option to meet these requirements. However, surface properties often affect the amount of biocatalysts immobilized, their bioactivity and stability, hampering their wide...

A direct and convenient method for the palladium-catalyzed reductive cross-coupling of aryl iodides or alkenyl bromides secondary benzyl halides under ambient CO pressure to generate a diverse array aryl/alkenyl alkyl ketones has been developed. This strategy successfully achieves three-component carbonylative reaction with Zn as reducing agent C−C bond formation, overcoming well-known homocoup...

poly (vinylpyrrolidone)-grafted silica as an organic-inorganic hybrid material was used as an effective heterogeneous polymeric cosolvent catalyst in organic reactions. this modified silica catalyzed nucleophilic displacement of alkyl halides for easy preparation of alkyl thiocyanates, alkyl cyanides, alkyl azides and alkyl aryl ethers. furthermore, the catalyst was applied for the conversion o...

A stereospecific nucleophilic substitution between tertiary alkyl bromides and alcohols is described in the Research Article on page 4329 by Toshiki Nokami, Takashi Koike, Manabu Abe, Eiji Shirakawa, Nishikata, co-workers. The entering alcohol formally attacks C−Br bond to undergo a retentive with formation of ethers.

The ligand rearrangement reaction of Cr(CO)6 is studied in a series of alcohol solutions using ultrafast infrared spectroscopy and Brownian dynamics simulations. Excitation with 266 nm light gives Cr(CO)5 which is quickly solvated by a ligand from the bath. In alcohol solutions, solvation by an alkyl or hydroxyl site can occur; all alkyl bound complexes eventually rearrange to hydroxyl bound co...

Inert alkyl bromides are rarely used in photoinduced 1,2-difunctionalization of alkenes due to their strong reduction potential and bond dissociation energy. In Research Article (e202305121), Jin Xie co-workers overcome the inherent redox limit achieve 1,2-aminoalkylation 1,2-alkylarylation different by using inner single electron transfer mechanism an excited trinuclear gold catalyst.