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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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SILYLATION OF NITRO COMPOUNDS AS A PROCESS 631<br />

Table 3.22 The C,C-coupl<strong>in</strong>g of im<strong>in</strong>ium cations 349 with reference nucleophiles<br />

Ph<br />

R 1<br />

O N<br />

+ OSi<br />

349f,f′,i<br />

Nu<br />

352a–h<br />

K<br />

Ph<br />

R 1<br />

O N<br />

353a–h<br />

Cation R 1 Si Nu Nu’ Product<br />

(349f) H TBS SnBu 3<br />

352a<br />

(349f) H TBS SnPh 3<br />

(349f) H TBS<br />

(349f) H TBS<br />

352e<br />

SnPh 3<br />

Nu′<br />

OSi<br />

352f<br />

Ph O<br />

O TBS<br />

352g<br />

(349f ′ ) H TMS SnBu3<br />

(349f ′ ) H TMS<br />

(349f ′ ) H TMS<br />

(349f ′ ) H TMS<br />

(349i) Me TBS<br />

a TMS–SiMe3; TBS–SiMe2Bu t .<br />

352a<br />

352b<br />

TMS<br />

O TBS<br />

Ph<br />

352c<br />

Ph O<br />

O TMS<br />

O<br />

352d<br />

OMe O<br />

O TBS<br />

352h<br />

Ph<br />

OMe<br />

(353a)<br />

(353a)<br />

(353c)<br />

(353 d)<br />

(353e)<br />

(353f)<br />

(353b)<br />

(353 g)<br />

(353 h)

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