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1,4-Pentadien-3-ol, 1-phenyl-5-(trimethylsilyl)-, (E,E)- is a complex organic compound with the molecular formula C15H24OSi. It is characterized by a pentadienol backbone, which consists of a five-carbon chain with alternating double bonds, and a hydroxyl group at the third carbon. The compound features a phenyl group attached to the first carbon and a trimethylsilyl group at the fifth carbon. The (E,E)- configuration indicates that both double bonds have the same geometric arrangement, with the substituents on each double bond being on opposite sides of the plane. 1,4-Pentadien-3-ol, 1-phenyl-5-(trimethylsilyl)-, (E,E)- is primarily used in organic synthesis and as a reagent in chemical reactions, particularly in the formation of various organic compounds and as a protecting group in organic synthesis.

81256-03-3

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81256-03-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81256-03-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,2,5 and 6 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 81256-03:
(7*8)+(6*1)+(5*2)+(4*5)+(3*6)+(2*0)+(1*3)=113
113 % 10 = 3
So 81256-03-3 is a valid CAS Registry Number.

81256-03-3Relevant academic research and scientific papers

1-LITHIO-1-BENZENESULFINYL-2-TRIMETHYLSILYLETHANE AS A 2-TRIMETHYLSILYLVINYL ANION EQUIVALENT IN REACTIONS WITH ALHEDYDES, KETONES AND EPOXIDES

Hsiao, C-N.,Shechter, H.

, p. 2371 - 2374 (2007/10/02)

Aldehydes, ketones and epoxides give adducts with 1-lithio-1-benzenesulfinyl-2-trimethylsilylethane which upon neutralization eliminate benezenesulfenic acid efficiently at 76 deg C to yield trans-3-(trimethylsilyl)allyl alcohols and trans-4-(trimethylsilyl)-3-alken-1-ols.

Silicon-Directed Nazarov Reactions II. Preparation and Cyclization of β-Silyl-substituted Divinyl Ketones

Jones, Todd K.,Denmark, Scott E.

, p. 2377 - 2396 (2007/10/02)

Two general methods for the preparation of β-silyl-substituted divinyl ketones have been developed starting from either α,β-unsaturated aldehydes or simple ketones.Anhydrous FeCl3 induces the cyclization to cyclopentenones under mild conditions and in good yields with predictable and complete control over the position of the double bond in the five-membered ring.The observed effects of substituents on rate can be explained by a rate-determining cationic electrocyclization.Silyl substitution has been shown to retard the reaction.

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