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P-Carboxybenzenesulfonyl azide

In addition to previously described syntheses4-5 by diazo group transfer with deformylation,6 2-diazocyclohexanone has been prepared by two variants of this method. In one, the reaction of 2-(hydroxymethylene)cyclohexanone with -toluene-sulfonyl azide is carried out in ether/diethylamine, and an enamine is assumed to be formed as an intermediate 7 in the other, the sodium salt of the hydroxymethylene compound was treated with the lithium salt of p-carboxybenzenesulfonyl azide... [Pg.45]

The diazo transfer reaction with sulfonyl azides has been extensively used for the preparation of diazo compounds with two electron-withdrawing groups (equation 1 ).28 Toluenesulfonyl azide (13a)29 is the standard reagent used, but due to problems of safety and ease of product separation, several alternative reagents have been developed recently. n-DodecylbenzenesuIfonyl azide (13b)30 is very effective for the preparation of crystalline diazo compounds, while p-acetamidobenzenesulfonyl azide (13c)31 or naph-thalenesulfonyl azide (13d)30 are particularly useful with fairly nonpolar compounds. Other useful reagents are methanesulfonyl azide (13e)32 and p-carboxybenzenesulfonyl azide (13f).33... [Pg.1033]

Diazo compounds p-Carboxybenzenesulfonyl azide. p-Toluenesulfonyl azide. [Pg.244]

See other pages where P-Carboxybenzenesulfonyl azide is mentioned: [Pg.101]    [Pg.120]    [Pg.125]    [Pg.212]    [Pg.35]    [Pg.66]    [Pg.659]    [Pg.660]    [Pg.669]    [Pg.101]    [Pg.120]    [Pg.125]    [Pg.212]    [Pg.35]    [Pg.66]    [Pg.659]    [Pg.660]    [Pg.669]    [Pg.672]    [Pg.430]   
See also in sourсe #XX -- [ Pg.9 , Pg.70 , Pg.289 ]

See also in sourсe #XX -- [ Pg.66 ]

See also in sourсe #XX -- [ Pg.9 , Pg.70 , Pg.289 ]

See also in sourсe #XX -- [ Pg.66 ]



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