137709-56-9

Basic information

• Product Name: 4,4-tetramethylene-1-(2,4,5-trimethoxyphenyl)-7-trimethylsilyl-6-heptyn-1,3,5-trione
• CAS NO: 137709-56-9
• Molecular Weight: 430.573
• Mol File: 137709-56-9.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 4,4-tetramethylene-1-(2,4,5-trimethoxyphenyl)-7-trimethylsilyl-6-heptyn-1,3,5-trione(CAS DataBase Reference)
• NIST Chemistry Reference: 4,4-tetramethylene-1-(2,4,5-trimethoxyphenyl)-7-trimethylsilyl-6-heptyn-1,3,5-trione(137709-56-9)
• EPA Substance Registry System: 4,4-tetramethylene-1-(2,4,5-trimethoxyphenyl)-7-trimethylsilyl-6-heptyn-1,3,5-trione(137709-56-9)

Safety Data

• Hazardous Substances Data: 137709-56-9(Hazardous Substances Data)

Upstream product

• 137709-50-3 ethyl 1-(1,1-ethylenedioxyethyl)cyclopentane-1-carboxylate 
• 137709-52-5 1-(2-Methyl-[1,3]dioxolan-2-yl)-cyclopentanecarbaldehyde 
• 137709-51-4 3,3-ethylenedioxy-2,2-tetramethylene-1-butanol 
• 28247-15-6 ethyl 1-acetylcyclopropane-1-carboxylate 
• 42833-66-9 2,4,5-trimethoxybenzoyl chloride 
• 137709-53-6 4-hydroxy-3,3-tetramethylene-6-trimethylsilyl-5-hexyn-2-one 

Downstream Products

• 137709-57-0 4,4-tetramethylene-1-(4,5-dimethoxy-2-hydroxyphenyl)-7-trimethylsilyl-6-heptyn-1,3,5-trione 

Relevant articles and documents

A novel oxidative intramolecular [4+2]cycloaddition of silylene-protected dihydroxystyrene derivatives leading to peri-hydroxy polyclic aromatic compounds: A synthesis of the ABCD ring system of fredericamycin A

Heating of the silylene protected dihydroxystyrene generated from the o-hydroxyacetophenone (3a) at 130-150°C for 15-48 h in a sealed tube gave intramolecular [4+2]cycloaddition products (5 and 6). The addition of chloranil to the reaction mixture brought