A binuclear aluminium complex as a single competent catalyst for efficient synthesis of urea, biuret, isourea, isothiourea, phosphorylguanidine, and quinazolinones

Abstract

A highly efficient chemoselective insertion of secondary amines, alcohols, thiols, and phosphine oxide as well as guanylation/cyclisation of acid aminoesters with heterocumulenes using a binuclear Al complex as a single competent catalyst is reported.

Mononuclear Aluminum Complexes as Precursors for Cyanosilylation of Carbonyl Compounds

“…The ligands, {Ph 2 P(E)NH−C 6 H 4 −SePh} [E=S ( L1 ), Se ( L2 )] were synthesized according to the protocol reported in literature, as shown in (Scheme 2). [33] First, the ligand precursor, phenylselenium‐amidophosphine chalcogenide, was prepared by the reaction of 2‐(phenylselenyl)aniline with chlorodiphenylphosphine (1 : 1) in toluene, followed by the addition of triethylamine (1 equiv.) at room temperature.…”

N^Nvs.N^E (E = S or Se) coordination behavior of imino-phosphanamidinate chalcogenide ligands towards aluminum alkyls: efficient hydroboration catalysis of nitriles, alkynes, and alkenes

“…Given the current interest in the use of main-group complexes in catalytic reactions in general and in the hydroboration reactions of varied organic substrates in particular, we have explored the catalytic reactivity of the aluminum alkyl complexes described above. [60][61][62][63] Precisely, we have investigated the hydroboration of nitriles, alkynes, and alkenes.…”

One-pot four-component synthesis of novel isothiourea-ethylene-tethered-piperazine derivatives

“… 22 Other important related reports include a tandem process by Wu, 23 a three-component reaction by Mishra, 24 and a binuclear aluminium complex mediated synthesis of carbodiimides by Panda. 25 …”