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69184-79-8

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69184-79-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 69184-79-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,9,1,8 and 4 respectively; the second part has 2 digits, 7 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 69184-79:
(7*6)+(6*9)+(5*1)+(4*8)+(3*4)+(2*7)+(1*9)=168
168 % 10 = 8
So 69184-79-8 is a valid CAS Registry Number.

69184-79-8Downstream Products

69184-79-8Relevant articles and documents

THE MUKAIYAMA REACTION OF KETENE BIS(TRIMETHYLSILYL)ACETALS WITH α-HALO ACETALS - A CONVENIENT BUTENOLIDE SYNTHESIS

Demnitz, F. W. J.

, p. 6109 - 6112 (1989)

Ketene bis(trimethylsilyl) acetals were reacted with α-halo acetals giving β-alkoxy-γ-halo acids which were converted to butenolides by reaction with equivalents of base.This constitutes a novel and short butenolide synthesis.

Diastereoselective cyclopropanation of ketone enols with Fischer carbene complexes

Barluenga, Jose,Suero, Marcos G.,Perez-Sanchez, Ivan,Florez, Josefa

, p. 2708 - 2709 (2008)

Treatment of aryl/heteroaryl methoxycarbene complexes of chromium with β-substituted ketone lithium enolates between -78 °C and room temperature resulted in the diastereoselective synthesis of 1,2,2,3-tetrasubstituted cyclopropanols. An exception has been observed in the reaction with cyclohexanone lithium enolate that yielded a bicyclic 2-buten-4-olide. 1,2-Dimethoxycyclopropanes and 1-methoxy-2-trimethylsilyloxycyclopropanes were isolated by quenching the reactions with MeOTf or Me3SiCl, respectively. This novel cyclopropanation process involves formation of lithium (3-oxoalkyl)pentacarbonylchromate intermediates which on warming undergo intramolecular addition to the carbonyl group. This cyclization is equivalent to the cyclopropanation in smooth conditions of electron-rich alkenes with Fischer carbene complexes. Copyright

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