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

Base Information

• Chemical Name: rac-2-Chloro-3,4-dihydro-2,5,7,8-tetramethyl-6-(phenylmethoxy)-2H-1-benzopyran
• CAS No.: 114341-58-1
• Molecular Formula: C₂₀H₂₃ClO₂
• Molecular Weight: 330.854

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

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

Chemical Property:

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

There total 2 articles about rac-2-Chloro-3,4-dihydro-2,5,7,8-tetramethyl-6-(phenylmethoxy)-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: 92.8%

6-benzyloxy-2-methoxy-2,5,7,8-tetramethylchroman-2-ol (53713-30-7) → rac-2-Chloro-3,4-dihydro-2,5,7,8-tetramethyl-6-(phenylmethoxy)-2H-1-benzopyran (114341-58-1)

Guidance literature:

With hydrogenchloride; 4 A molecular sieve; In diethyl ether; at 0 ℃; for 0.5h;

DOI:10.1021/jo00047a043

Reference yield:

rac-2-methoxy-3,4-dihydro-2,5,7,8-tetramethyl-6-(phenylmethoxy)-2H-1-benzopyran (53713-36-3) → rac-2-Chloro-3,4-dihydro-2,5,7,8-tetramethyl-6-(phenylmethoxy)-2H-1-benzopyran (114341-58-1)

Guidance literature:

With calcium chloride; In diethyl ether; hexane;

Reference yield: 60.5%

ethylmagnesium chloride (2386-64-3) + rac-2-Chloro-3,4-dihydro-2,5,7,8-tetramethyl-6-(phenylmethoxy)-2H-1-benzopyran (114341-58-1) → rac-3,4-dihydro-2-ethyl-6-(phenylmethoxy)-2,5,7,8-tetramethyl-2H-1-benzopyran (121175-15-3)

Guidance literature:

In diethyl ether; 1.) -78 deg C, 30 min, 2.) 0 deg C, 7 h;

DOI:10.1021/jo00047a043

upstream raw materials:

6-benzyloxy-2-methoxy-2,5,7,8-tetramethylchroman-2-ol

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

Downstream raw materials:

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

6-(Phenylmethoxy)-2,5,7,8-tetramethyl-4H-1-benzopyran

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

(2RS,4'R,8'R)-α-Tocopheryl benzyl ether

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