52249-87-3 Usage
Preparation
Preparation by reaction of benzyl chloride with 3,6-di-hydroxy-2,4-dimethoxyacetophenone, ? in the presence of potassium carbonate and sodium iodide in refluxing acetone for 10 h, then at r.t. for 6 h; ? in the presence of potassium carbonate in DMF.
Check Digit Verification of cas no
The CAS Registry Mumber 52249-87-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,2,2,4 and 9 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 52249-87:
(7*5)+(6*2)+(5*2)+(4*4)+(3*9)+(2*8)+(1*7)=123
123 % 10 = 3
So 52249-87-3 is a valid CAS Registry Number.
52249-87-3Relevant articles and documents
Synthetic Studies on Flavone Derivatives. XV. Isomerization of Chalcones into Flavanones in Methyl Cellosolve-Phosphoric Acid
Iinuma, Munekazu,Matsuura, Shin,Tanaka, Toshiyuki
, p. 1472 - 1476 (2007/10/02)
Isomerization of a chalcone having several benzoyloxyl groups into a flavanone by the use of phosphoric acid in methyl cellosolve was investigated, and higher yields of flavanones were obtained with much shorter reaction times than in the conventional pro
