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6683-96-1

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6683-96-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 6683-96-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,6,8 and 3 respectively; the second part has 2 digits, 9 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 6683-96:
(6*6)+(5*6)+(4*8)+(3*3)+(2*9)+(1*6)=131
131 % 10 = 1
So 6683-96-1 is a valid CAS Registry Number.

6683-96-1Relevant articles and documents

Ring size and nothing else matters: unusual regioselectivity of alkyne hydration by NHC gold(i) complexes

Ageshina, Alexandra A.,Asachenko, Andrey F.,Chesnokov, Gleb A.,Minaeva, Lidiya I.,Nechaev, Mikhail S.,Philippova, Anna N.,Rzhevskiy, Sergey A.,Topchiy, Maxim A.

supporting information, p. 5686 - 5689 (2021/06/16)

We have investigated the role of ring sizes and substituents in NHC ligands in some (NHC)Au(i) complexes in the hydration of internal alkynes. Despite the fact that using (NHC)Au(i) complexes in the hydration of diarylacetylenes leads to Markovnikov-type products, the precise tuning of ligands allows changing the regioselectivity in arylalkylacetylene hydration to the anti-Markovnikov-type.

NOVEL VINYLBENZENE COMPOUND AND PHOTOSENSITIVE PHOTORESIST COMPOSITION COMPRISING THE SAME

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Paragraph 0133-0138, (2017/07/26)

Provided is a photocurable composition comprising: (A) a photocurable compound; and (B) a vinylbenzene-containing monomer having a structure represented by chemical formula 1. In the chemical formula 1, X, R1, R2, R3, L, L1, L2 and L3 are the same as defi

Isolable gold(I) complexes having one low-coordinating ligand as catalysts for the selective hydration of substituted alkynes at room temperature without acidic promoters

Leyva, Antonio,Corma, Avelino

scheme or table, p. 2067 - 2074 (2009/08/07)

Hydration of a wide range of alkynes to the corresponding ketones has been afforded in high yields at room temperature by using gold(I)-phosphine complexes as catalyst, with no acidic cocatalysts required. Suitable substrates covering alkyl and aryl terminal alkynes, enynes, internal alkynes, and propargylic alcohols, including enantiopure forms, are cleanly transformed to the corresponding ketones in nearly quantitative yields. Acid-labile groups present in the substrates are preserved. The catalytic activity strongly depends on both the nature of the phosphine coordinated to the gold (I) center and the softness of the counteranion, the complex AuSPhOsNTf2 showing the better activity. A plausible mechanism for the hydration of alkynes through ketal intermediates is proposed on the basis of kinetic studies. The described catalytic system should provide an efficient alternative to mercury-based methodologies and be useful in synthetic programs.

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