681216-21-7

Basic information

• Product Name: 3-Butenoic acid, 3-methyl-2-[(phenylmethoxy)amino]-, (3R)-tetrahydro-4,4-dimethyl-2-oxo-3-furanyl ester, (2S)-
• CAS NO: 681216-21-7
• Molecular Formula: C18H23NO5
• Molecular Weight: 333.384
• Mol File: 681216-21-7.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 3-Butenoic acid, 3-methyl-2-[(phenylmethoxy)amino]-, (3R)-tetrahydro-4,4-dimethyl-2-oxo-3-furanyl ester, (2S)-(CAS DataBase Reference)
• NIST Chemistry Reference: 3-Butenoic acid, 3-methyl-2-[(phenylmethoxy)amino]-, (3R)-tetrahydro-4,4-dimethyl-2-oxo-3-furanyl ester, (2S)-(681216-21-7)
• EPA Substance Registry System: 3-Butenoic acid, 3-methyl-2-[(phenylmethoxy)amino]-, (3R)-tetrahydro-4,4-dimethyl-2-oxo-3-furanyl ester, (2S)-(681216-21-7)

Safety Data

• Hazardous Substances Data: 681216-21-7(Hazardous Substances Data)

Upstream product

• 40052-11-7 2-bromo-3-methyl-but-2-enoyl chloride 
• 622-33-3 N-benzyloxyamine 
• 599-04-2 (R)-Pantolacton 
• 1578-14-9 2-bromo-3-methyl-crotonic acid 

Relevant articles and documents

α-Bromo-β,γ-unsaturated ketenes for the synthesis of α-benzylamino-β,γ-unsaturated acids

The synthesis of α-benzylamino-β,γ-unsaturated acids has been developed starting from α-bromo-α,β-unsaturated chlorides. Via treatment of the acyl chlorides with (R)-pantolactone in the presence of TEA, the in situ formation of the deconjugated ketenes and their direct transformation into chiral esters was performed. The substitution of bromine with benzylamine, followed by acid hydrolysis, allowed to us obtain enantiomerically enriched α-benzylamino-β,γ-unsaturated acids.