rac-3,4-dihydro-2-ethyl-6-(phenylmethoxy)-2,5,7,8-tetramethyl-2H-1-benzopyran

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Chemical Name:rac-3,4-dihydro-2-ethyl-6-(phenylmethoxy)-2,5,7,8-tetramethyl-2H-1-benzopyran
CAS No.:121175-15-3
Molecular Formula:C₂₂H₂₈O₂
Molecular Weight:324.463
Hs Code.:

Synonyms:rac-3,4-dihydro-2-ethyl-6-(phenylmethoxy)-2,5,7,8-tetramethyl-2H-1-benzopyran

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Business phase:: The product has achieved commercial mass production^*data from LookChem market partment

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Chemical Property of rac-3,4-dihydro-2-ethyl-6-(phenylmethoxy)-2,5,7,8-tetramethyl-2H-1-benzopyran

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Technology Process of rac-3,4-dihydro-2-ethyl-6-(phenylmethoxy)-2,5,7,8-tetramethyl-2H-1-benzopyran

There total 3 articles about rac-3,4-dihydro-2-ethyl-6-(phenylmethoxy)-2,5,7,8-tetramethyl-2H-1-benzopyran which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 60.5%

: 2386-64-3
ethylmagnesium chloride

: 114341-58-1
rac-2-Chloro-3,4-dihydro-2,5,7,8-tetramethyl-6-(phenylmethoxy)-2H-1-benzopyran

: 121175-15-3
rac-3,4-dihydro-2-ethyl-6-(phenylmethoxy)-2,5,7,8-tetramethyl-2H-1-benzopyran

Guidance literature:: In diethyl ether; 1.) -78 deg C, 30 min, 2.) 0 deg C, 7 h;
DOI:10.1021/jo00047a043

Reference yield: 34.0%

: 925-90-6
ethylmagnesium bromide

: 53713-36-3
rac-2-methoxy-3,4-dihydro-2,5,7,8-tetramethyl-6-(phenylmethoxy)-2H-1-benzopyran

: 121175-15-3
rac-3,4-dihydro-2-ethyl-6-(phenylmethoxy)-2,5,7,8-tetramethyl-2H-1-benzopyran

Guidance literature:: With titanium tetrachloride; In diethyl ether; dichloromethane; at -75 ℃; for 1h;
DOI:10.1021/jo00275a010

Reference yield:

: 53713-30-7
6-benzyloxy-2-methoxy-2,5,7,8-tetramethylchroman-2-ol

: 121175-15-3
rac-3,4-dihydro-2-ethyl-6-(phenylmethoxy)-2,5,7,8-tetramethyl-2H-1-benzopyran

Guidance literature:: Multi-step reaction with 2 steps

1: 92.8 percent / HCl, molecular sieves (4A) / diethyl ether / 0.5 h / 0 °C

2: 60.5 percent / diethyl ether / 1.) -78 deg C, 30 min, 2.) 0 deg C, 7 h

With hydrogenchloride; 4 A molecular sieve; In diethyl ether;
DOI:10.1021/jo00047a043