78317-99-4

Basic information

• Product Name: rac-(3S,4R)-4-bromo-3,4-dihydro-3-phenylisochromen-1-one
• CAS NO: 78317-99-4
• Molecular Weight: 303.155
• Mol File: 78317-99-4.mol
• Article Data: 4

Chemical Properties

• CAS DataBase Reference: rac-(3S,4R)-4-bromo-3,4-dihydro-3-phenylisochromen-1-one(CAS DataBase Reference)
• NIST Chemistry Reference: rac-(3S,4R)-4-bromo-3,4-dihydro-3-phenylisochromen-1-one(78317-99-4)
• EPA Substance Registry System: rac-(3S,4R)-4-bromo-3,4-dihydro-3-phenylisochromen-1-one(78317-99-4)

Safety Data

• Hazardous Substances Data: 78317-99-4(Hazardous Substances Data)

Upstream product

• 66374-10-5 (Z)-2-(2-phenylethenyl)benzoic acid 
• 5079-90-3 (E)-2-styrylbenzoic acid 
• 38453-72-4 (E)-methyl 2-styrylbenzoate 
• 610-97-9 o-iodo-methyl-benzoic acid 
• 100-42-5 styrene 
• 60901-21-5 o-styrylbenzoic acid 

Downstream Products

• 100954-90-3 (RS)-3-((RS)-α-chloro-benzyl)-phthalide 
• 2881-31-4 2-(2-oxo-2-phenylethyl)benzoic acid 
• 92496-76-9 threo (3RS,8RS)-3-isobenzofuran-1(3H)-one 
• 92496-76-9 erythro (3RS,8SR)-3-isobenzofuran-1(3H)-one 

Relevant articles and documents

Trifluoroacetic acid catalyzed highly regioselective bromocyclization of styrene-type carboxylic acid

A trifluoroacetic acid catalyzed highly 6-endo regioselective bromocyclization of styrene-type carboxylic acid has been developed. The resulting 3,4-dihydroisocoumarines are valuable building blocks in organic synthesis.

Design of Chiral Bifunctional Dialkyl Sulfide Catalysts for Regio-, Diastereo-, and Enantioselective Bromolactonization

Although a wide variety of chiral organocatalysts have been developed for asymmetric transformations, effective chiral dialkyl sulfide organocatalysts remain relatively rare and under-developed, despite the potential utility of dialkyl sulfide catalysts. Herein, we report the development of chiral bifunctional dialkyl sulfide catalysts possessing a urea moiety for regio-, diastereo-, and enantioselective bromolactonization. The importance of the bifunctional design of chiral sulfide catalysts was clearly demonstrated in the present work. The roles of both the sulfide and urea moieties of the catalyst were clarified based on the results of experimental and theoretical investigation.