23343-24-0

Basic information

• Product Name: 9'-nor-7,8-dehydro-Isolicarin B
• Synonyms: 9'-nor-7,8-dehydro-Isolicarin B
• CAS NO: 23343-24-0
• Molecular Weight: 308.334
• Mol File: 23343-24-0.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 9'-nor-7,8-dehydro-Isolicarin B(CAS DataBase Reference)
• NIST Chemistry Reference: 9'-nor-7,8-dehydro-Isolicarin B(23343-24-0)
• EPA Substance Registry System: 9'-nor-7,8-dehydro-Isolicarin B(23343-24-0)

Safety Data

• Hazardous Substances Data: 23343-24-0(Hazardous Substances Data)

Upstream product

• 2635-13-4 1,2-(methylenedioxy)-4-bromobenzene 
• 333-27-7 methyl trifluoromethanesulfonate 

Downstream Products

• 530-22-3 egonol 

Relevant articles and documents

Synthesis of benzofurans through coupling of dienylacetylenes with carbene complexes: Total synthesis of egonol

The reaction of various carbene complexes with dienylacetylenes has been examined. The reaction has been used as the cornerstone for the preparation of the nor-neolignan natural product egonol in five steps from readily available components. In most examples of the carbene-alkyne coupling, the reaction proceeds to form benzofuran derivatives. In the case of one highly functionalized terminal alkyne, a competing rearrangement/cyclization process occurs in preference to the carbene coupling process. The use of silylated alkynes subverts this process.