Reduction of carboxylic esters
CA 1290760 C · Owner: Okada, Taiiti · Inventors: Abe, Yasuaki; Okada, Taiiti
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for producing a compound of the formula: wherein R1 and R2 each stand for a lower alkyl group; n denotes an integer of 0 to 21; X stands for hydrogen atom or an optionally protected hydroxyl group; and Y stands for an optionally protected hydroxyl group, which comprises by reducing an ester compound of the formula:, wherein R1 R2, n, X and Y are of the same meaning as defined above, and R3 stands for a lower alkyl group with a mixture of sodium borohydride and aluminum chloride in the presence of water gives the desired compound in a high yield and is advantageous, from an industrial point of view.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted October 15, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 15, 2008.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.