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181705-72-6

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181705-72-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 181705-72-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,1,7,0 and 5 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 181705-72:
(8*1)+(7*8)+(6*1)+(5*7)+(4*0)+(3*5)+(2*7)+(1*2)=136
136 % 10 = 6
So 181705-72-6 is a valid CAS Registry Number.

181705-72-6Downstream Products

181705-72-6Relevant articles and documents

Synthesis of diversely functionalized indolizidinones and related bicyclic lactams using intramolecular Grubbs olefin metathesis and Dieckmann condensation

Hanessian, Stephen,Sailes, Helen,Munro, Alexander,Therrien, Eric

, p. 7219 - 7233 (2007/10/03)

Bicyclic 1-aza-2-oxo ring systems with versatile functionality were synthesized from the Grubbs olefin metathesis of appropriate olefinic precursors, starting with L-pyroglutamic acid. The carbocyclization products were further functionalized utilizing th

Lewis acid assisted vinylogous Mannich and Mukaiyama aldol reactions: A route to densely hydroxylated indolizidine alkaloid analogues

Rassu, Gloria,Carta, Paola,Pinna, Luigi,Battistini, Lucia,Zanardi, Franca,Acquotti, Domenico,Casiraghi, Giovanni

, p. 1395 - 1400 (2007/10/03)

The hydroxymethyl-substituted indolizidines 6 and 7, representative members of a ring-B-expanded alexine-australine subclass, are readily accessible by starting with furan-based silyloxydiene 12 and hydroxymethyl hemiaminal 11, through a synthesis sequence involving a scantily exploited vinylogous version of the Mannich reaction. The key iminium electrophilic acceptor 11 is, in turn, available through a vinylogous intermolecular Mukaiyama aldolization process between pyrrole-based silyloxydiene 8 and (S)- glyceraldehyde 9.

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