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177780-87-9

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177780-87-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 177780-87-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,7,7,8 and 0 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 177780-87:
(8*1)+(7*7)+(6*7)+(5*7)+(4*8)+(3*0)+(2*8)+(1*7)=189
189 % 10 = 9
So 177780-87-9 is a valid CAS Registry Number.

177780-87-9Downstream Products

177780-87-9Relevant articles and documents

Synthesis of medium and large cyclic amines in rhodium-catalysed reactions of aminoalkenes with H2/CO1

Bergmann, David J.,Campi, Eva M.,Roy Jackson,Patti, Antonio F.,Saylik, Dilek

, p. 835 - 844 (2007/10/03)

Rhodium-catalysed reactions of N-benzyl- or N-alkyl-aminoalkenes (6) with H2/CO can give cyclic amines (7) (7-13 ring size) in good to excellent yields when BIPHEPHOS is used as a ligand. Hydrogenation of the aminoalkene becomes a competing reaction for the smaller rings but can be overcome by using a H2/CO gas ratio of 1:5. Reactions of 2-alkenyloxybenzylamines (13) gave 9-, 12- and 17-membered rings (14) in 30-40% yield, but dimer formation (16) and/or hydrogenation were competing reactions. Similar reactions of alkenylamides and ortho-alkenylanilines gave only non-cyclized amino aldehydes as products in low isolated yields.

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