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Nitrile Oxides, Nitrones, and Nitronates in Organic Synthesis : Novel ...

Nitrile Oxides, Nitrones, and Nitronates in Organic Synthesis : Novel ...

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H<br />

O −<br />

N<br />

O<br />

166, 167 AZN<br />

O<br />

N<br />

−<br />

+<br />

WAZN 170<br />

+<br />

N<br />

N O−<br />

+ +<br />

I −<br />

H<br />

OEt<br />

−O +<br />

N<br />

H<br />

R 2<br />

O<br />

C<br />

H 3C<br />

H 3C<br />

H<br />

H3C<br />

O<br />

N<br />

CH 3<br />

O −<br />

R 2<br />

CH3<br />

Ref. 173<br />

S<br />

SYNTHESIS OF NITRONES 151<br />

STAZN168, 169<br />

CH3<br />

R 1<br />

a; R 1 = R 2 = H<br />

b; R 1 = H, R 2 = Me<br />

c; R 1 = H, R 2 = OMe<br />

d; R 1 = H, R 2 = Cl<br />

e; R 1 = H, R 2 = NMe 2<br />

f; R 1 = H, R 2 = SMe<br />

g; R 1 = H, R 2 = SO 2Me<br />

h; R 1 = H, R 2 = NO 2<br />

+<br />

Ref. 174<br />

Fig. 2.5<br />

O −<br />

C N<br />

+<br />

H<br />

N<br />

−<br />

+<br />

O<br />

Ref. R = Ph 171 , Me 172<br />

H<br />

O −<br />

N<br />

+<br />

F F<br />

R 4<br />

F<br />

F F<br />

F<br />

H<br />

F<br />

F F F<br />

F F F<br />

SR<br />

i; R 1 = H, R 2 = SPh<br />

j; R 1 = H, R 2 = S p-tolyl<br />

k; R 1 = OH, R 2 = H<br />

l; R 1 = OMe, R 2 = H<br />

m; R 1 = Cl, R 2 = H<br />

n; R 1 = NO 2, R 2 = H<br />

o; R 1 = SPh, R 2 = H

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