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281214-26-4

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281214-26-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 281214-26-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,8,1,2,1 and 4 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 281214-26:
(8*2)+(7*8)+(6*1)+(5*2)+(4*1)+(3*4)+(2*2)+(1*6)=114
114 % 10 = 4
So 281214-26-4 is a valid CAS Registry Number.

281214-26-4Downstream Products

281214-26-4Relevant articles and documents

Direct regiospecific and highly enantioselective intermolecular α-allylic alkylation of aldehydes by a combination of transition-metal and chiral amine catalysts

Afewerki, Samson,Ibrahem, Ismail,Rydfjord, Jonas,Breistein, Palle,Cordova, Armando

, p. 2972 - 2977 (2012/04/11)

The first direct intermolecular regiospecific and highly enantioselective α-allylic alkylation of linear aldehydes by a combination of achiral bench-stable Pd0 complexes and simple chiral amines as co-catalysts is disclosed. The co-catalytic asymmetric chemoselective and regiospecific α-allylic alkylation reaction is linked in tandem with in situ reduction to give the corresponding 2-alkyl alcohols with high enantiomeric ratios (up to 98:2 e.r.; e.r.=enantiomeric ratio). It is also an expeditious entry to valuable 2-alkyl substituted hemiacetals, 2-alkyl-butane-1,4-diols, and amines. The concise co-catalytic asymmetric total syntheses of biologically active natural products (e.g., Arundic acid) are disclosed. Go organic! Direct intermolecular regiospecific and highly enantioselective α-allylic alkylation of linear aldehydes by a combination of achiral bench-stable Pd0 complexes and simple chiral amines as co-catalysts is disclosed (see scheme). Copyright

Asymmetric synthesis of 1,3- and 1,3,4-substituted pyrrolidines

Lin, Jing,Chan, Wing Hong,Lee, Albert W. M.,Wong, Wai Yeung,Huang, Pei Qiang

, p. 2949 - 2951 (2007/10/03)

Diastereoselective alkylation of N-acylnorbornene sultams 2 afforded a variety of enantiomerically pure products 3a-3e. Reduction with LiAlH4 (LAH) followed by ditosylation furnished chiral 1,4-ditosylates 5a-5e which underwent a cyclization reaction with primary amines to afford chiral 1,3- and 1,3,4-substituted pyrrolidines. (C) 2000 Elsevier Science Ltd.

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