78259-44-6

Basic information

• Product Name: C₂₇H₂₉ClO₇S
• CAS NO: 78259-44-6
• Molecular Weight: 533.042
• Mol File: 78259-44-6.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: C₂₇H₂₉ClO₇S(CAS DataBase Reference)
• NIST Chemistry Reference: C₂₇H₂₉ClO₇S(78259-44-6)
• EPA Substance Registry System: C₂₇H₂₉ClO₇S(78259-44-6)

Safety Data

• Hazardous Substances Data: 78259-44-6(Hazardous Substances Data)

Upstream product

• 510-50-9 gibberellic acid methyl ester 
• 98-59-9 p-toluenesulfonyl chloride 

Relevant articles and documents

Allylic Chlorination of Gibberellins A3 and A7 Methyl Esters and of Gibberellin A3: Preparation of Gibberellin A5

A high-yield conversion of gibberellin A3 to gibberellin A5 is described.With thionyl chloride, gibberellin A3 methyl ester gives mainly 1β-chlorogibberellin A5 methyl ester; the isomeric 3α-chloro-1-ene was the main product from the reaction with toluene-p-sulphonyl chloride and lithium chloride.Each product is reduced by tri-n-butylstannane and acetylated to give the same mixture of the 13-acetates of gibberellin A5 methyl ester and of the isomeric 1(10)-ene-19,2-lactone.Hydrolysis of gibberellin A5 methyl ester 13-acetate gives gibberellin A5 in 20percent overall yield from gibberellin A3. 2H1>Gibberellin A5 is obtained in the same way by using tri-n-butyl2H1>stannane in the reduction step.Analogous chlorination products of gibberellin A7 methyl ester and of gibberellin A3 are described.