142636-22-4

Basic information

• Product Name: O-but-3-yn-1-yl Se-phenyl selenocarbonate
• Synonyms: O-but-3-yn-1-yl Se-phenyl selenocarbonate
• CAS NO: 142636-22-4
• Molecular Weight: 253.159
• Mol File: 142636-22-4.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: O-but-3-yn-1-yl Se-phenyl selenocarbonate(CAS DataBase Reference)
• NIST Chemistry Reference: O-but-3-yn-1-yl Se-phenyl selenocarbonate(142636-22-4)
• EPA Substance Registry System: O-but-3-yn-1-yl Se-phenyl selenocarbonate(142636-22-4)

Safety Data

• Hazardous Substances Data: 142636-22-4(Hazardous Substances Data)

Upstream product

• 645-96-5 Benzeneselenol 
• 190774-49-3 but-3-ynyl-1-oxycarbonyl chloride 

Downstream Products

• 547-65-9 α-methylene-γ-butyrolactone 
• 6285-99-0 (E)-benzylidenedihydro-2(3H)-furanone 

Relevant articles and documents

Synthesis of γ- and δ-Lactones by Free-Radical Annelation of Se-Phenyl Selenocarbonates

A general method for the synthesis of γ- and δ-lactones through the intramolecular addition of alkoxycarbonyl radicals, formed by reaction of Se-phenylselenocarbonates with n-Bu3SnH, onto carbon-carbon multiple bonds is described.This free-radical cyclization is characterized by high regioselectivity favoring exo addition and by a high ratio of cyclization to reduction.Monocyclic, fused bicyclic, and spirocyclic lactones are formed in good to excellent yield.Use of allyltri-n-butyltin as a chain-transfer agent in the place of n-Bu3SnH affords the corresponding 3-butenyl lactones.