Donor free stibenium cation as an efficient cyanosilylation catalyst

KHAN, SHABANA; GOTHE, PRACHI; Das, Shubhajit; SEN, NILANJANA; Tothadi, Srinu; Pati, Swapan K.; Sarkar, Pallavi

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Donor free stibenium cation as an efficient cyanosilylation catalyst

SEN, NILANJANA; GOTHE, PRACHI; Sarkar, Pallavi; Das, Shubhajit; Tothadi, Srinu; Pati, Swapan K.; KHAN, SHABANA

URI: https://doi.org/10.1039/D2CC03158B http://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/7355 Date: 2022-09

Abstract:

The synthesis of novel stibenium cations and their catalytic application in cyanosilylation of carbonyl compounds have been described. Treatment of chlorostibine L1SbCl [L1 = 1,2-C6H4{N(CH2tBu)}2] (2) with 1 equiv. of AgOTf and AgSbF6 resulted in the formation of donor free L1SbOTf (3) and [L1Sb]+[SbF6]− (4), respectively. Among these three compounds, 4 exhibits excellent catalytic activity towards the cyanosilylation of aldehydes and ketones.

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