The nucleophilic addition of TMSC(Li)N 2 at the low reactive the nucleophile mainly (methyl, chloromethyl or halogen) or completely (isopropyl) toward the C-5 position. The fine-C-5 position of the uracil ring of C-6 substituted uracil derivatives is reported. The ratio of C-5 versus C-6 tuned subst
Reactivity of lithium trimethylsilyldiazomethane and diazomethane toward the 5,6-double bond of uracil and uridine derivatives
β Scribed by Raffaele Saladino; Luigi Stasi; Claudia Crestini; Rosario Nicoletti; Maurizio Botta
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- French
- Weight
- 558 KB
- Volume
- 53
- Category
- Article
- ISSN
- 0040-4020
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β¦ Synopsis
The reaction of lithium trimethylsilyldiazomethane [TMS(Li)N2] with uracil and uridine derivatives is reported; this provides a general method for the synthesis of several new annulated and fused heterocyclic systems. The unexpected cycloaddition of diazomethane (CH2N 2) to the C-5,6 double bond of 5-nitrouracil and 5-nilrouridine derivatives is also reporled.
π SIMILAR VOLUMES
## Abstract The kinetics of C~6~H~5~ reactions with __n__βC~__n__~H~2__n__+2~ (__n__ = 3, 4, 6, 8) have been studied by the pulsed laser photolysis/mass spectrometric method using C~6~H~5~COCH~3~ as the phenyl precursor at temperatures between 494 and 1051 K. The rate constants were determined by k