Visible light amination/Smiles cascade: access to phthalazine derivatives.

Visible light amination/Smiles cascade: access to phthalazine derivatives.
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DOI:
10.1039/c6sc01095d
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发表时间:
2016-08-01
期刊:
影响因子:
8.4
通讯作者:
Belmont P
Belmont P
中科院分区:
化学1区
文献类型:
--
作者:
Brachet E;Marzo L;Selkti M;König B;Belmont P

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We report the synthesis of various phthalazines via a new cascade reaction, initiated by visible light photocatalysis, involving a radical hydroamination reaction followed by a radical Smiles rearrangement. We report the synthesis of various phthalazines via a new cascade reaction, initiated by visible light photocatalysis, involving a radical hydroamination reaction followed by a radical Smiles rearrangement. Phthalazine derivatives are obtained in high yields and from a broad scope readily accessible ortho-alkynylsulfonohydrazone precursors. The mild photoredox conditions ensure an excellent functional group tolerance. Application of this strategy to a one-pot protocol starting from the corresponding carbonyl compounds, and subsequent functionalization allow the rapid synthesis of structurally diverse structures.
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