4511-21-1

Basic information

• Product Name: Carbonochloridic acid, 2,4,6-tris(1,1-dimethylethyl)phenyl ester
• CAS NO: 4511-21-1
• Molecular Formula: C19H29ClO2
• Molecular Weight: 324.891
• Mol File: 4511-21-1.mol
• Article Data: 4

Chemical Properties

• CAS DataBase Reference: Carbonochloridic acid, 2,4,6-tris(1,1-dimethylethyl)phenyl ester(CAS DataBase Reference)
• NIST Chemistry Reference: Carbonochloridic acid, 2,4,6-tris(1,1-dimethylethyl)phenyl ester(4511-21-1)
• EPA Substance Registry System: Carbonochloridic acid, 2,4,6-tris(1,1-dimethylethyl)phenyl ester(4511-21-1)

Safety Data

• Hazardous Substances Data: 4511-21-1(Hazardous Substances Data)

Upstream product

• 732-26-3 2,4,6-tri-tert-butylphenoxol 
• 75-44-5 phosgene 

Downstream Products

• 855297-15-3 2,4,6-tris(t-butyl)phenyl N-(2-trimethylsilylethyl)-N-nitrosocarbamate 
• 855297-19-7 2,4,6-tris(t-butyl)phenyl N-(2-trimethylsilylethyl)carbamate 
• 161794-82-7 C₁₉H₃₁NO₃ 
• 136040-27-2 Carbonic acid 2-thioxo-2H-pyridin-1-yl ester 2,4,6-tri-tert-butyl-phenyl ester 
• 161941-91-9 O-4-nitrophenylsulfonyl-2,4,6-tri-tert-butylphenylhydroxamic acid 

Relevant articles and documents

Chemical transformations on the surface of [60]fullerene: Synthesis of [60]fullereno[1′,2′:4,5]oxazolidin-2-one

Base-induced α-elimination from substituted 0-4-nitrophenylsulfonylhydroxamic acids has been used as a mild source of nitrenes for capture by [60]fullerene; rearrangment of the resulting [60]fullereno[1′,2′:2,3]aziridine bearing a N-ethoxycarbonyl groupin

Synthesis of polyalkylphenyl prop-2-ynoates and their flash vacuum pyrolysis to polyalkylcyclohepta[b]furan-2(2H)-ones

A new method for the smooth and highly efficient preparation of polyalkylated aryl propiolates has been developed. It is based on the formation of the corresponding aryl carbonochloridates (cf Scheme 1 and Table 1) that react with sodium (or lithium) propiolate in THF at 25-65°, with intermediate generation of the mixed anhydrides of the arylcarbonic acids and prop-2-ynoic acid, which then decompose almost quantitatively into CO2 and the aryl propiolates (cf. Scheme 11). This procedure is superior to the transformation of propynoic acid into its difficult-to-handle acid chloride, which is then reacted with sodium (or lithium) arenolates. A number of the polyalkylated aryl propiolates were subjected to flash vacuum pyrolysis (FVP) at 600-650°and 10-2 Torr which led to the formation of the corresponding cyclohepta[b]furan-2(2H)-ones in average yields of 25-45% (cf. Scheme 14). It has further been found in pilot experiments that the polyalkylated cyclohepta[b]furan-2(2H)-ones react with 1-(pyrrolidin-1-yl)cyclohexene in toluene at 120-130°to yield the corresponding 1,2,3,4- tetrahydrobenz[a]azulenes, which become, with the growing number of Me groups at the seven-membered ring, more and more sensitive to oxidative destruction by air (cf. Scheme 15).