405271-44-5

Basic information

• Product Name: Benzoic acid, 2-[(4-chlorobenzoyl)thio]-, (1,1-dimethylethyl)dimethylsilyl ester
• CAS NO: 405271-44-5
• Molecular Formula: C20H23ClO3SSi
• Molecular Weight: 407.005
• Mol File: 405271-44-5.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: Benzoic acid, 2-[(4-chlorobenzoyl)thio]-, (1,1-dimethylethyl)dimethylsilyl ester(CAS DataBase Reference)
• NIST Chemistry Reference: Benzoic acid, 2-[(4-chlorobenzoyl)thio]-, (1,1-dimethylethyl)dimethylsilyl ester(405271-44-5)
• EPA Substance Registry System: Benzoic acid, 2-[(4-chlorobenzoyl)thio]-, (1,1-dimethylethyl)dimethylsilyl ester(405271-44-5)

Safety Data

• Hazardous Substances Data: 405271-44-5(Hazardous Substances Data)

Upstream product

• 147-93-3 Thiosalicylic acid 
• 18162-48-6 tert-butyldimethylsilyl chloride 
• 145702-36-9 2-(4-Chloro-benzoylsulfanyl)-benzoic acid 

Downstream Products

• 66724-23-0 2-(4'-chlorophenyl)-4H-1-benzothiopyran-4-one 

Relevant articles and documents

A new synthesis of 4H-1-benzothiopyran-4-ones using (trimethylsilyl)methylenetriphenylphosphorane

The reaction of silyl ester of S-acyl(aroyl) thiosalicylic acids 3 with (trimethylsilyl)methylenetriphenylphosphorane 4 in step wise fashion leads to the acylphosphoranes 7, which subsequently undergo intramolecular Wittig cyclization on the thiolester carbonyl to afford the 4H-1-benzothiopyran-4-ones 8 in good to excellent yields.