On Lemmas 1 and 2 to Proposition 39 of Book 3 of Newtons Principia
✍ Scribed by Geoffrey J. Dobson
- Publisher
- Springer-Verlag
- Year
- 2001
- Tongue
- English
- Weight
- 135 KB
- Volume
- 55
- Category
- Article
- ISSN
- 0003-9519
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📜 SIMILAR VOLUMES
## Abstract β‐Sultam‐3‐acetic acid ester 3 prepared from __rac‐S__‐benzyl‐β‐homocysteine is alkylated with bromoacetates yielding diacetates 9 which are transformed into the phenylthio esters 11. The thiazinanone derivatives 12 are obtained from 11 by rearrangement with lithium bis(trimethylsilyl)a
## Abstract Functionalized 2,3‐dihydro‐1,3‐thiazin‐4(1H)‐one derivatives have been synthesized by cyclocondensation of 3‐alkyl(aryl)amino‐2‐cyano‐3‐mercaptoacrylamides with aldehydes and ketones under acidic catalysis. 6‐Alkyl(aryl)amino‐5‐cyano‐2,3‐dihy‐ dro‐1,3‐thiazin‐4(1H)‐ones, when treated wi
## ~~~~~ ~ ~ ~ The synthesis of 4-chloropyrrolo[2,3-d]pyrimidine and 2-amino-4-chloropyrrolo[2,3-d]pyrimidine a -D-and ~-~-2',3'-dideoxyribonucleosides 6a, b and 7a, b is described (Scheme 1). Glycosylation of the pyrrolo[2,3-d]pyrimidinyl anions of la, b with in situ prepared 2,3-dideoxy-a /B-D-g