3511-69-1 Usage
Preparation
Preparation by reaction of acetyl chloride, ? with 2,2-bis(4-ethoxyphenyl)propane (bisphenol A diethyl ether) in the presence of aluminium chloride in methylene chloride at 30° for 30 min (61%) or in ethylene dichloride at 50° for 3 h (63–65%) ; ? with 2,2-bis(4-methoxyphenyl)propane (bisphenol A dimethyl ether) in the presence of aluminium chloride in ethylene dichloride at 70° for 2 h (45%).
Check Digit Verification of cas no
The CAS Registry Mumber 3511-69-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,5,1 and 1 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 3511-69:
(6*3)+(5*5)+(4*1)+(3*1)+(2*6)+(1*9)=71
71 % 10 = 1
So 3511-69-1 is a valid CAS Registry Number.
3511-69-1Relevant articles and documents
Tetrakisphenol
Nowakowska,Daszkiewicz,Kyziol
, p. 1191 - 1197 (2007/10/03)
Formylation of bisphenol-A (1a), with subsequent methylation, oxidation and esterification, gave 2,2-bis-(4-methoxy-3-methoxycarbonylphenyl)-propane (11b). It was transformed into 2,2-bis-[4-methoxy-3-(2-hydroxy-2-propyl)-phenyl]-propane (12b) by the addition of methylmagnesium iodide. This carbinol was condensed with phenol in the presence of dry hydrogen chloride and the title compound was isolated as its tetramethyl ether (4b). Its structure of 2,2-bis-[4-hydroxy-3-(4-hydroxycumyl)-phenyl]-propane (4a) was confirmed by 13C-NMR spectra. In PhOH/HCl medium tetrakisphenol (4a) decomposed and isomerized to bisphenol-A (1a).
