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66559-15-7

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66559-15-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 66559-15-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,5,5 and 9 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 66559-15:
(7*6)+(6*6)+(5*5)+(4*5)+(3*9)+(2*1)+(1*5)=157
157 % 10 = 7
So 66559-15-7 is a valid CAS Registry Number.

66559-15-7Downstream Products

66559-15-7Relevant articles and documents

Aldehyde to Ketone Homologation Enabled by Improved Access to Thioalkyl Phosphonium Salts

Fragis, Meghan,Deobald, Jackson L.,Dharavath, Srinivas,Scott, Jeffrey,Magolan, Jakob

, p. 4548 - 4552 (2021)

Phosphines were previously unusable as Pummerer-type nucleophiles due to competing redox chemistry with sulfoxides. Here we circumvent this problem to achieve a formal phosphine Pummerer reaction that offers thioalkyl phosphonium salts that, in turn, give rise to diverse vinyl sulfides via Wittig olefinations. Thirty vinyl sulfides are thus prepared from (alkylthioalkyl)triphenyl phosphonium salts and aldehydes. The hydrolysis of these vinyl sulfides offers an efficient and versatile two-step one-carbon homologation of aldehydes to ketones.

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