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【结 构 式】

【分子编号】57226

【品名】bromo[3-(methoxymethyl)phenyl]magnesium

【CA登记号】

【 分 子 式 】C8H9BrMgO

【 分 子 量 】225.36786

【元素组成】C 42.64% H 4.03% Br 35.45% Mg 10.78% O 7.1%

与该中间体有关的原料药合成路线共 1 条

合成路线1

该中间体在本合成路线中的序号:(III)

Treatment of 3-bromobenzyl bromide (I) with sodium methoxide gives 1-bromo-3-(methoxymethyl)benzene (II). After conversion of aryl bromide (II) into the corresponding Grignard reagent (III), addition to epoxide (IV) in the presence of CuI affords the chiral alcohol (V). Removal of the O-trityl protecting group of (V) under acidic conditions provides diol (VI), which is selectively acylated at the primary hydroxyl group by means of acetyl chloride and 2,4,6-collidine to produce the mono-acetate (VII). After protection of the secondary hydroxyl group of (VII) as the tetrahydropyranyl ether (VIII), alkaline hydrolysis of the acetate ester group leads to the primary alcohol (IX). Subsequent Swern oxidation of alcohol (IX) provides aldehyde (X). Condensation of aldehyde (X) with tetrabromomethane in the presence of triphenylphosphine furnishes the gem-dibromoolefin (XI). This is then converted to the terminal alkyne (XII) by treatment with butyllithium in cold THF.

2 Ohuchida, S.; Maruyama, T. (Ono Pharmaceutical Co., Ltd.); 5-Thia-omega-substd. phenyl-prostaglandin E derivs., process for producing the same and drugs containing the same as the active ingredient. EP 1097922; JP 2001089444; US 6462081; WO 0003980 .
1 Maruyama, T.; et al.; Design and synthesis of a selective EP4-receptor agonist. Part 3: 16-Phenyl-5-thiaPGE1 and 9-beta-halo derivatives with improved stability. Bioorg Med Chem 2002, 10, 6, 1743.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(I) 20466 1-bromo-3-(bromomethyl)benzene 823-78-9 C7H6Br2 详情 详情
(II) 56397 3-bromobenzyl methyl ether; 1-bromo-3-(methoxymethyl)benzene C8H9BrO 详情 详情
(III) 57226 bromo[3-(methoxymethyl)phenyl]magnesium C8H9BrMgO 详情 详情
(IV) 41006 (2S)-oxiranylmethyl trityl ether; (2S)-2-[(trityloxy)methyl]oxirane C22H20O2 详情 详情
(V) 56398 (2S)-1-[3-(methoxymethyl)phenyl]-3-(trityloxy)-2-propanol C30H30O3 详情 详情
(VI) 56399 (2S)-3-[3-(methoxymethyl)phenyl]-1,2-propanediol C11H16O3 详情 详情
(VII) 56400 (2S)-2-hydroxy-3-[3-(methoxymethyl)phenyl]propyl acetate C13H18O4 详情 详情
(VIII) 56401 (2S)-3-[3-(methoxymethyl)phenyl]-2-(tetrahydro-2H-pyran-2-yloxy)propyl acetate C18H26O5 详情 详情
(IX) 56402 (2S)-3-[3-(methoxymethyl)phenyl]-2-(tetrahydro-2H-pyran-2-yloxy)-1-propanol C16H24O4 详情 详情
(X) 56403 (2S)-3-[3-(methoxymethyl)phenyl]-2-(tetrahydro-2H-pyran-2-yloxy)propanal C16H22O4 详情 详情
(XI) 56404 (1S)-3,3-dibromo-1-[3-(methoxymethyl)benzyl]-2-propenyl tetrahydro-2H-pyran-2-yl ether; 2-({(1S)-3,3-dibromo-1-[3-(methoxymethyl)benzyl]-2-propenyl}oxy)tetrahydro-2H-pyran C17H22Br2O3 详情 详情
(XII) 56405 (1S)-1-[3-(methoxymethyl)benzyl]-2-propynyl tetrahydro-2H-pyran-2-yl ether; 2-({(1S)-1-[3-(methoxymethyl)benzyl]-2-propynyl}oxy)tetrahydro-2H-pyran C17H22O3 详情 详情
Extended Information