甲磺酸奥希替尼的合成
发布时间:2018-09-07 09:04
【摘要】:4-氟-2-甲氧基硝基苯(2)经Pd/C催化还原得4-氟-2-甲氧基苯胺(3),3在≤0℃温度下经硝化得4-氟-2-甲氧基-5-硝基苯胺(4);由于降低了反应温度(文献为≤10℃),故成功避免了产品碳化,从而简化了后处理。此外,N-甲基吲哚(5)与2,4-二氯嘧啶缩合得3-(2-氯嘧啶-4-基)-1-甲基吲哚(6),通过改变加料顺序(先使2,4-二氯嘧啶和无水三氯化铁充分络合后再加入5),使该反应杂质明显减少,收率达70%。4和6缩合后,经氨化得N'-(2-二甲胺基乙基)-2-甲氧基-N'-甲基-N-[4-(1-甲基吲哚-3-基)嘧啶-2-基]-5-硝基苯-1,4-二胺(8),8经水合肼/三氯化铁还原硝基(文献用铁粉)得N~1-甲基-N~1-(2-二甲胺基乙基)-5-甲氧基-N~4-[4-(1-甲基吲哚-3-基)嘧啶-2-基]苯-1,2,4-三胺(9),后处理更加便捷,同时也减少了"三废"污染。9再经酰化、消除及成盐制得甲磺酸奥希替尼,总收率40.8%(以2计),纯度99.7%。
[Abstract]:4-fluoro-2-methoxyaniline (3) aniline (3) was synthesized by the catalytic reduction of 4-fluoro-2-methoxy nitrobenzene (2) by Pd/C to obtain 4-fluoro-2-methoxy-5-nitroaniline (4) by nitration at 鈮,
本文编号:2227814
[Abstract]:4-fluoro-2-methoxyaniline (3) aniline (3) was synthesized by the catalytic reduction of 4-fluoro-2-methoxy nitrobenzene (2) by Pd/C to obtain 4-fluoro-2-methoxy-5-nitroaniline (4) by nitration at 鈮,
本文编号:2227814
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