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61539-61-5

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61539-61-5 Usage

Uses

3-(Trimethylsilyloxy)-1,1-dimethoxy-1,3-butadiene has a wide variety of applications in synthetic chemistry. One example of its applications is its use as a reagent in the synthesis of Lasiodiplodin, a potent antileukemic macrolide.

Check Digit Verification of cas no

The CAS Registry Mumber 61539-61-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,1,5,3 and 9 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 61539-61:
(7*6)+(6*1)+(5*5)+(4*3)+(3*9)+(2*6)+(1*1)=125
125 % 10 = 5
So 61539-61-5 is a valid CAS Registry Number.

61539-61-5Relevant articles and documents

Addition of silyloxydienes to 2,6-dibromo-1,4-benzoquinone: An approach to highly oxygenated bromonaphthoquinones for the synthesis of thysanone

Barker, David,Brimble, Margaret A.,Do, Peter,Turner, Peter

, p. 2441 - 2449 (2007/10/03)

The synthesis of tetraoxygenated bromonaphthoquinones 6a, 6b, 6c, 6d, key intermediates for a synthesis of the 3C protease inhibitor, thysanone, were investigated. Addition of 1-methoxy-1,3-bis(trimethylsilyloxy)-1,3-butadiene 8 to 2,6-dibromo-1,4-benzoquinone 10 in benzene afforded a mixture of naphthoquinone 6a, arising from Diels-Alder addition followed by aromatisation, and Michael adduct 12. The Michael adduct 12 predominated when THF was used as solvent whereas 6a predominated when benzene was used. Naphthoquinone 6a underwent benzylation to naphthoquinone 6c. Addition of 1,1-dimethoxy-3-trimethylsilyloxy-1,3-butadiene 9 to 2,6-dibromo-1,4-benzoquinone 10 followed by benzylation failed to afford the desired bromonaphthoquinone 6d yet methylation did afford naphthoquinone 6b. Bromonaphthoquinone 6d was finally prepared from naphthol 18, obtained from addition of diene 9 to 1,4-benzoquinone 17, followed by ortho-bromination and oxidation. Attempted Sakurai allylation of bromonaphthoquinone 6d afforded naphthodihydrofuran 21. A similar observation was observed for 2-carbomethoxy-1,4-naphthoquinone 22 that also underwent Sakurai allylation to afford naphthodihydrofuran 23. The structure of Michael adduct 12 was confirmed by X-ray crystallography.

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