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August R uttimann -
City: Arlesheim
State/Country: CH
Email and Contact Information
August R uttimann ( Arlesheim, CH )
No Company infomation exists
August R uttimann ( Arlesheim, CH )
US5631398 - Method for the production of (3-alkoxycarbonyl-2-butenyl) triphenylphosphonium salts
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05/20/1997
A processes and intermediates useful for the manufacture of the Wittig ester salts are disclosed. The Wittig ester salts are known as important C.sub.5 building blocks for the manufacture of various polyenecarboxylic acid esters in the field of carotenoid chemistry.