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123620-68-8

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123620-68-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 123620-68-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,3,6,2 and 0 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 123620-68:
(8*1)+(7*2)+(6*3)+(5*6)+(4*2)+(3*0)+(2*6)+(1*8)=98
98 % 10 = 8
So 123620-68-8 is a valid CAS Registry Number.

123620-68-8Relevant articles and documents

CONVENIENT KETONE SYNTHESIS VIA N-ACYLAZIRIDINES

Wattanasin, S.,Kathawala, F.G.

, p. 811 - 814 (1984)

N-Acylaziridines couple efficiently with organolithium and Grignard reagents to produce ketones in high yields.

Process for preparing hydroxyalkylbenzocyclobutenes

-

, (2008/06/13)

A process for preparing a substituted or unsubstituted 3- or 4-hydroxyalkylbenzocyclobutene compound comprises reducing a corresponding 3- or 4-formyl or ketobenzocyclobutene compound with a hydride at a temperature below that at which dimerization or oligomerization of the formyl- or ketobenzocycloutene compound or the thus-produced hydroxyalkylbenzocyclobutene compound is a significant side reaction, for a time sufficient to convert the formyl- or ketobenzocyclobutene compound to the hydroxyalkylbenzocyclobutene compound. In a two-step process, formylbenzocyclobutenes are prepared from bromobenzocyclobutenes in 90% yield or from benzocyclobutenes in a 70% yield, and then converted to hydroxymethylbenzocyclobutenes for an overall yield of about 85% from a bromobenzocyclobutene or of about 65% from a benzocyclobutene. In a two-step process, ketobenzocyclobutenes from bromobenzocyclobutene Grignard reagents and an N-alkanoyl- or N-aroyl-2-methylaziridine are converted to hydroxyalkylbenzocyclobutenes in high yields.

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