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1401052-74-1

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1401052-74-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1401052-74-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,0,1,0,5 and 2 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1401052-74:
(9*1)+(8*4)+(7*0)+(6*1)+(5*0)+(4*5)+(3*2)+(2*7)+(1*4)=91
91 % 10 = 1
So 1401052-74-1 is a valid CAS Registry Number.

1401052-74-1Downstream Products

1401052-74-1Relevant articles and documents

Rhodium-catalyzed cascade oxidative annulation leading to substituted naphtho[1,8- bc ]pyrans by sequential cleavage of C(sp2)-H/C(sp 3)-H and C(sp2)-H/O-H Bonds

Tan, Xing,Liu, Bingxian,Li, Xiangyu,Li, Bin,Xu, Shansheng,Song, Haibin,Wang, Baiquan

supporting information, p. 16163 - 16166 (2012/11/07)

The cascade oxidative annulation reactions of benzoylacetonitrile with internal alkynes proceed efficiently in the presence of a rhodium catalyst and a copper oxidant to give substituted naphtho[1,8-bc]pyrans by sequential cleavage of C(sp2)-H/C(sp3)-H and C(sp2)-H/O-H bonds. These cascade reactions are highly regioselective with unsymmetrical alkynes. Experiments reveal that the first-step reaction proceeds by sequential cleavage of C(sp2)-H/C(sp3)-H bonds and annulation with alkynes, leading to 1-naphthols as the intermediate products. Subsequently, 1-naphthols react with alkynes by cleavage of C(sp2)-H/O-H bonds, affording the 1:2 coupling products. Moreover, some of the naphtho[1,8-bc]pyran products exhibit intense fluorescence in the solid state.

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