Base Metal‐terpyridine Complex Immobilized on Stationary Phase Aimed as Reusable Hydrosilylation Catalyst

Abstract

This paper is dedicated to Professor Andy Hor on the occasion of his 65th birthday.

Catalytic hydrosilylation using an immobilized Co-terpyridine complex activated by inorganic salts and its application in a flow reactor

“…Terpyridine-modified silica gel (tpy@SiO 2 ) and [Co(tpy)Br 2 ] were prepared according to literature methods. 13,22 The hydrosilylated products 1 , 25 2l , 12 and 2b 9 were synthesized as authentic samples according to the literature. Silica gel for Co(tpy)Br 2 @SiO 2 preparation was purchased from Nacalai Tesque (Silica Gel 60, spherical, neutral).…”

“…20,21 Recently, our group developed a Co complex supported on silica gel (Co(tpy)(X) 2 @SiO 2 , where X = OH, Br) in which a Co complex with terpyridine (tpy), being one of the simplest pincer ligands, was immobilized on the surface of silica gel or glassware. 22 Co(tpy)Br 2 @SiO 2 (a rough image of the silica gel surface supporting Co(tpy)Br 2 is shown in Fig. 1) exhibited good catalytic activity using NaBHEt 3 as the activator for the hydrosilylation of 1-octene with diphenylsilane (Ph 2 SiH 2 ).…”