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142114-82-7

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142114-82-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 142114-82-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,2,1,1 and 4 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 142114-82:
(8*1)+(7*4)+(6*2)+(5*1)+(4*1)+(3*4)+(2*8)+(1*2)=87
87 % 10 = 7
So 142114-82-7 is a valid CAS Registry Number.

142114-82-7Relevant articles and documents

Catalytic Staudinger/aza-Wittig sequence by in situ phosphane oxide reduction

Van Kalkeren, Henri A.,Te Grotenhuis, Colet,Haasjes, Frank S.,Hommersom,Rutjes, Floris P. J. T.,Van Delft, Floris L.

, p. 7059 - 7066 (2013/11/06)

A Staudinger/aza-Wittig reaction sequence is described that is catalytic in phosphorus. Towards this end, the phosphane oxide is reduced in situ by diphenylsilane, which allows for substoichiometric amounts of the catalyst 5-phenyldibenzophosphole to be used. The substrate scope is investigated and benzoxazoles, benzodiazepine imidates and a 2-methoxypyrrole were successfully synthesized. These investigations show that a fast aza-Wittig reaction is required to obtain high yields. A catalytic Staudinger/aza-Wittig reaction sequence, involving in situ phosphane oxide reduction, was successfully developed. Benzoxazoles, benzodiazepine imidates and 2-methoxypyrrole were synthesized without phosphane oxide waste products. Copyright

One pot conversion of azido arenes to N-arylacetamides and N-arylformamides: Synthesis of 1,4-benzodiazepine-2,5-diones and fused [2,1-b]quinazolinones

Kamal, Ahmed,Ramana, A. Venkata,Reddy, K. Srinivasa,Ramana, K. Venkata,Hari Babu,Prasad, B. Rajendra

, p. 8187 - 8190 (2007/10/03)

Sodium iodide in acidic media has been employed for the synthesis of N-arylformamides and N-arylacetamides. The NaI/acetic acid reagent system has also been extended for the synthesis of 1,4-benzodiazepine-2,5-diones, pyrrolo[2,1-c][1,4]benzodiazepine-5,11-diones, and fused [2,1-b]quinazolinones.

Synthesis of pyrrolo[2,1-c][1,4]benzodiazepine antibiotics via azido reductive cyclization with HMDST

Kamal, Ahmed,Reddy, B.S. Praveen,Reddy, B.S. Narayan

, p. 6803 - 6806 (2007/10/03)

A new facile synthesis of pyrrolo[2,1-c][1,4]benzodiazepine (PBD) ring system has been achieved by reductive cyclization of the azide employing hexamethyldisilathiane (HMDST). The parent unsubstituted PBD and the natural product DC-81 have also been prepared in good overall yields.

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