Heck Reaction - PowerPoint PPT Presentation

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Heck Reaction

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Heck Reaction Late 1960, Heck developed Heck reaction. For Aryl halide or vinyl Halide With Alkyl Halide, no Heck reaction is possible because of following reason. – PowerPoint PPT presentation

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Title: Heck Reaction


1
Heck Reaction
Late 1960, Heck developed Heck reaction.
2
For Aryl halide or vinyl Halide
3
With Alkyl Halide, no Heck reaction is possible
because of following reason.
4
Good with Iodide or bromide, but not with
chloride due to less reactivity Good with psuedo
halide ArCOCl, ArSO2-Cl, Ar-N2X-, R-OSO2CF3,
-OSO2-Rf (Rfperfluoroalkyl), R-OSO2CH3, Ar-ArI
5
For Aryl chloride, dippb 1,4-bis(diisopropylphosp
hino)butane
Activated with Cr(CO)3, and demetallation with I2
6
For conjugate diene
aromatization
7
Difference between Terminal Alkene and Cyclic
Alkene
Ag2CO3 is for retarding isomerization of alkene
8
Heck reaction of 2,3-dihydrofuran derivative and
2-iodonaphthalene
9
Asymmetric Heck Reaction
10
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11
Intramolecular Heck Reaction
12
Natural Alkaloid, Synthesis of Dehydrobifoline
13
Synthesis of Prostaglandin Precusor
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