The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 29, 2009
Filed:
May. 02, 2005
Walter Baratta, Udine, IT;
Katia Siega, Tarvisio, IT;
Micaela Toniutti, Udine, IT;
Pierluigi Rigo, Udine, IT;
Walter Baratta, Udine, IT;
Katia Siega, Tarvisio, IT;
Micaela Toniutti, Udine, IT;
Pierluigi Rigo, Udine, IT;
Universita' Degli Studi Di Udine, Udine, IT;
Abstract
The invention relates to a new class of ruthenium (II) complexes containing as ligands 2-(aminomethyl)pyridines and phosphines, proven to be extremely active catalysts in the reduction of ketones to alcohols via hydrogen transfer. By using 2-propanol as the hydrogen source with the ruthenium complexes, high yields of the corresponding alcohol can be rapidly obtained starting from linear and cyclic alkyl aryl, dialkyl and diaryl ketones. The conversion of ketones to alcohols can reach 100% if operating in a gaseous hydrogen atmosphere (2-3 atm). Where the phosphines used are optically active, starting from prochiral ketone compounds various types of optically active alcohols can be produced, being important intermediates in the pharmaceutical industry, in the agrochemical industry and for fine chemicals generally.