Borane complexes
CA 1102825 A · Owner: Expansia · Inventors: Aspisi, Christian R.; Demosthene, Claude G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
New bis-thioaralkyl/alkyl alkyl boranes of the formula:, R4R3HB : R1SASR2 : BHR3R4, wherein A stands for a straight branched or cyclic hydrocarbon, chain containing from 1 to 9 carbon atoms; R1 and R2 stand each for a straight or branched alkyl rest containing up to 5 carbon atoms in the longest chain, or benzyl radicals optionally substituted by one or more lower alkyl containing up to 5 carbon atoms or a halogen, and R3 and R4 stand for a hydrogen atom, a lower alkyl up to C6 or a mono or bicycloalkyl group are useful for use in hydroboration and reduction processes.
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 June 9, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 9, 1998.
- 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.