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2H-Pyran, 2-ethoxy-3,4-dihydro-6-methyl-4-phenyl, cis-(9CI) is a complex organic compound with the molecular formula C15H18O2. It belongs to the class of heterocyclic compounds, specifically pyrans, which are six-membered cyclic ethers containing one oxygen atom in the ring. This particular compound features a 2-ethoxy group, a 6-methyl group, and a 4-phenyl group, with the cis-configuration indicating the relative positions of the substituents around the double bond. It is an important intermediate in the synthesis of various pharmaceuticals and agrochemicals due to its unique structure and reactivity.

155259-37-3

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155259-37-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 155259-37-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,5,2,5 and 9 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 155259-37:
(8*1)+(7*5)+(6*5)+(5*2)+(4*5)+(3*9)+(2*3)+(1*7)=143
143 % 10 = 3
So 155259-37-3 is a valid CAS Registry Number.

155259-37-3Downstream Products

155259-37-3Relevant academic research and scientific papers

(E)-2-Oxo-1-sulfonyl-3-alkenes as Reactive Hetero 1,3-Dienes. Absolutely endo-Selective Hetero Diels-Alder Reactions with Vinyl Ethers in the Presence of a Lewis Acid Catalyst

Wada, Eiji,Yasuoka, Hiroshi,Kanemasa, Shuji

, p. 145 - 148 (1994)

(E)-2-Oxo-1-sulfonyl-3-alkenes as new hetero 1,3-dienes undergo smooth hetero Diels-Alder reactions with vinyl ethers in the presence of Eu(fod)3 or TiCl2(i-PrO)2.The reactions are absolutely endo-selective producing 2,4-cis-3,4-dihydro-2H-pyrans in excel

Oxidative rearrangement of 2-alkoxy-3,4-dihydro-2H-pyrans: stereocontrolled synthesis of 4,5-cis-disubstituted tetrahydrofuranones including whisky and cognac lactones and crobarbatic acid

Armstrong, Alan,Ashraff, Cassim,Chung, Hunsuk,Murtagh, Lorraine

experimental part, p. 4490 - 4504 (2009/10/09)

Oxidation of 2-alkoxy-3,4-dihydro-2H-pyrans 3 with dimethyldioxirane or MTO/urea-H2O2 followed by Jones oxidation leads to rearrangement and stereocontrolled formation of 4,5-cis-disubstituted tetrahydrofuranones. The method is applied to the synthesis of the whisky lactone 9, cognac lactone 10 and crobarbatic acid 17.

Exclusively endo-selective Lewis acid-catalyzed hetero Diels-Alder reactions of (E)-1-phenylsulfonyl-3-alken-2-ones with vinyl ethers

Wada, Eiji,Pei, Wen,Yasuoka, Hiroshi,Chin, Uchou,Kanemasa, Shuji

, p. 1205 - 1220 (2007/10/03)

(E)-1-Phenylsulfonyl-3-alken-2-ones as new hetero 1,3-dienes undergo smooth hetero Diels-Alder reactions with vinyl ethers in the presence of a catalytic amount of Lewis acid such as ZnI2, Eu(fod)3, and TiCl2(i-PrO)2

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