title: An Aluminum Hydride That Functions like a Transition-Metal Catalyst.
abstract: The reaction of [LAlH2 ] (L=HC(CMeNAr)2 , Ar=2,6-iPr2 C6 H3 ) with MeOTf (Tf=SO2 CF3 ) resulted in the formation of [LAlH(OTf)] (1) in high yield. The triflate substituent in 1 increases the positive charge at the aluminum center, which implies that 1 has a strong Lewis acidic character. The excellent catalytic activity of 1 for the hydroboration of organic compounds with carbonyl groups was investigated. Furthermore, it was shown that 1 effectively initiates the addition reaction of trimethylsilyl cyanide (TMSCN) to both aldehydes and ketones. Quantum mechanical calculations were carried out to explore the reaction mechanism.
authors.affiliation: School of Chemical Engineering and Environment, Beijing Institute of Technology, 100081 Beijing (P.R. China). zhiyang@bit.edu.cn.
authors.forename: Zhi
authors.initials: Z
authors.lastname: Yang
authors.affiliation: School of Chemical Engineering and Environment, Beijing Institute of Technology, 100081 Beijing (P.R. China).
authors.forename: Mingdong
authors.initials: M
authors.lastname: Zhong
authors.affiliation: School of Chemical Engineering and Environment, Beijing Institute of Technology, 100081 Beijing (P.R. China).
authors.forename: Xiaoli
authors.initials: X
authors.lastname: Ma
authors.affiliation: Department of Chemistry, National Institute of Technology Calicut, NIT Campus P.O., Calicut, Kerala, 673 601 (India).
authors.forename: Susmita
authors.initials: S
authors.lastname: De
authors.affiliation: Department of Chemistry, National Institute of Technology Calicut, NIT Campus P.O., Calicut, Kerala, 673 601 (India).
authors.forename: Chakkittakandiyil
authors.initials: C
authors.lastname: Anusha
authors.affiliation: Department of Chemistry, National Institute of Technology Calicut, NIT Campus P.O., Calicut, Kerala, 673 601 (India). param@nitc.ac.in.
authors.forename: Pattiyil
authors.initials: P
authors.lastname: Parameswaran
authors.affiliation: Institut für Anorganische Chemie, Universität Göttingen, Tammannstrasse 4, 37077 Göttingen (Germany). hroesky@gwdg.de.
authors.forename: Herbert W
authors.initials: HW
authors.lastname: Roesky
keywords: aluminum; homogeneous catalysis; hydrides; hydroboration; hydrosilylation