An imidazolin-2-iminato ligand organozinc complex as a catalyst for hydroboration of organic nitriles

Das, Suman and Bhattacharjee, Jayeeta and Panda, Tarun K. (2019) An imidazolin-2-iminato ligand organozinc complex as a catalyst for hydroboration of organic nitriles. New Journal of Chemistry, 43 (43). pp. 16812-16818. ISSN 1144-0546

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Abstract

The reaction of diethylzinc with imidazolin-2-imines (ImRNH, R = Dipp (2,6-diisopropylphenyl)), Mes (2,4,6-trimethylphenyl), and tBu (tert-butyl) afforded the corresponding dimeric zinc(ii) imidazolin-2-iminato complexes [{(ImRN)Zn(CH2CH3)}2] (R = Dipp, 1a; R = Mes, 1b; R = tBu, 1c). The zinc complexes were characterised using spectroscopic techniques and the molecular structure of complex 1b was established by single-crystal X-ray diffraction analysis. Complex 1c was used as a catalyst for the chemo-selective hydroboration of organic nitriles with pinacolborane (HBpin) at ambient temperature to obtain diborylamines of a broad substrate scope in high yield. Zinc complex 1c exhibits a versatile substrate scope and good functional group tolerance for catalytic hydroboration reactions. A most plausible mechanism is proposed on the basis of the kinetic study.

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IITH Creators:

IITH Creators	ORCiD
Das, Suman	UNSPECIFIED
Bhattacharjee, Jayeeta	UNSPECIFIED
Panda, Tarun K	http://orcid.org/0000-0003-0975-0118

Item Type:

Article

Uncontrolled Keywords:

Article; catalyst; chemical structure; environmental temperature; hydroboration; priority journal; proton nuclear magnetic resonance; X ray diffraction

Subjects:

Chemistry
Chemistry > Inorganic chemistry
Chemical Engineering

Divisions:

Department of Chemistry

Depositing User:

. LibTrainee 2021

Date Deposited:

16 Jun 2021 05:00

Last Modified:

16 Jun 2021 05:00

URI:

http://raiithold.iith.ac.in/id/eprint/7918