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127001-34-7

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127001-34-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 127001-34-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,7,0,0 and 1 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 127001-34:
(8*1)+(7*2)+(6*7)+(5*0)+(4*0)+(3*1)+(2*3)+(1*4)=77
77 % 10 = 7
So 127001-34-7 is a valid CAS Registry Number.

127001-34-7Relevant articles and documents

Catalytic oxidation of imines based on methyltrioxorhenium/urea hydrogen peroxide: A mild and easy chemo- and regioselective entry to nitrones

Soldaini, Gianluca,Cardona, Francesca,Goti, Andrea

, p. 473 - 476 (2007/10/03)

The first successful catalytic oxidation procedure for the chemoselective conversion of imines to nitrones is reported. The reaction is general, high yielding, and user and environmentally friendly, and furnishes a solution to the yet unanswered issue of

Asymmetric synthesis of (R)-hexane-1,5-diol, (R)-hex-3-ene-1,5-diol and (R)-6-methylhept-5-en-2-ol (sulcatol) employing a tandem asymmetric conjugate addition and stereospecific Meisenheimer rearrangement protocol

Davies, Stephen G.,Smyth, G. Darren

, p. 2467 - 2477 (2007/10/03)

Highly stereoselective conjugate addition of lithium (R)-N-methyl-(α-methylbenzyl)amide to tert-butyl (E,E)-hexa-2,4-dienoate, followed by reduction of the ester to the corresponding alcohol, affords a substrate which undergoes, upon oxidation, a stereospecific Meisenheimer rearrangement to give a single diastereomer of the corresponding trialkylhydroxylamine. The analogous N-benzyl adduct gives lower yields in the oxidation-rearrangement reaction. If the ester is not reduced to the alcohol, N-oxidation leads to Cope elimination, not Meisenheimer rearrangement. Cleavage of the N-O bond gives (R)-hex-3-ene-1,5-diol, and hydrogenation of the double bond affords (R)-hexane-1,5-diol in high ee. This methodology has been applied to the synthesis of the insect pheromone (R)-6-methylhept-5-en-2-ol (sulcatol) from tert-butyl (E,E)-hexa-2,4-dienoate, via a sequence involving conjugate addition of the lithium amide, Grignard addition to the ester, Meisenheimer rearrangement, hydrogenation of the double bond, dehydration of the tertiary alcohol and finally N-O bond cleavage.

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