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1221432-97-8

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1221432-97-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1221432-97-8 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,2,1,4,3 and 2 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1221432-97:
(9*1)+(8*2)+(7*2)+(6*1)+(5*4)+(4*3)+(3*2)+(2*9)+(1*7)=108
108 % 10 = 8
So 1221432-97-8 is a valid CAS Registry Number.

1221432-97-8Downstream Products

1221432-97-8Relevant articles and documents

Propargylic and allenic carbocycle synthesis through palladium-catalyzed dearomatization reaction

Peng, Bo,Feng, Xiujuan,Zhang, Xin,Zhang, Sheng,Bao, Ming

experimental part, p. 2619 - 2627 (2010/06/17)

The dearomatization reaction of benzylic chlorides (1a?k), chloromethylnaphthalenes (1l?r), and naphthalene allyl chlorides (3a?d) with allenyltributyltin proceeded smoothly in the presence of Pd(PPh 3)4 catalyst at room temperature to give the corresponding propargylated and/or allenylated dearomatization products (5, 5′; 6, 6′; and 7, respectively) in high to fair yields. The reaction of 1a?k proceeded smoothly in the presence of TBAF, whereas it was not necessary to use TBAF as an additive in the reactions of 1l?k and 3a?d. These reactions provided a new and efficient method for the synthesis of propargylic and allenic carbocycles.

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