✦ LIBER ✦

Preparation of 1-Methoxycarbonyl-1-t-Butyldimethylsilyloxy Epoxides. Their Transformation into 3-Hydroxy 2-Acetal-Esters and certain 3-Hydroxy 2-Keto-Esters

✍ Scribed by Bernard Pujol; Richard Sabatier; Pierre-Alexandre Driguez; Alain Doutheau

Book ID: 104224711
Publisher: Elsevier Science
Year: 1992
Tongue: French
Weight: 287 KB
Volume: 33
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(00)91643-5

No coin nor oath required. For personal study only.

✦ Synopsis

The peracid oxidation of methyl 2-(t-butyldimethylsilyloxy)-7.alkcnoates 2 furnished the corresponding epoxides 3 in good yields.The regiospecific opening of the latter compounds with methanol afforded 3-hydroxy Z-acetal-esters 4. When alkyl disuhstitnted in position 3, compounds 3 or 4 could be deprotectcd to give rise to 3-hydroxy Z-keto-esters 5.

📜 SIMILAR VOLUMES

3-Acetoxy-6-hydroxy-2,4,5-trimethylbenzy

3-Acetoxy-6-hydroxy-2,4,5-trimethylbenzylacetoacetic Ester, and its Transformation into Chromene and Chroman Derivatives1

✍ Smith, Lee Irvin; Carlin, Robert B. 📂 Article 📅 1942 🏛 American Chemical Society 🌐 English ⚖ 700 KB

Interaction of Hydroxylamine with Esters

Interaction of Hydroxylamine with Esters of 2-Oxobutenoic Acids. Synthesis of 3-Hydroximino-1-hydroxy-2-pyrrolidinones.

✍ M. Katkevics; E. Korchagova; T. Ivanova; V. Slavinska; E. Lukevics 📂 Article 📅 2005 🏛 John Wiley and Sons ⚖ 19 KB

Synthesis of Tetrafunctionalized 2-Azido

Synthesis of Tetrafunctionalized 2-Azido-3-hydroxy-1,4-diones and Their Transformation into 5-Substituted 3-Acylisoxazoles

✍ Éva Juhász-Tótha; Tamás Patonay 📂 Article 📅 2002 🏛 John Wiley and Sons 🌐 English ⚖ 192 KB 👁 1 views

Preparation of 4-hydroxy-3-substituted,

Preparation of 4-hydroxy-3-substituted, 2H-1-benzopyran-2-ones and 2H-1-benzothiopyran-2-ones from carboxylic esters and methyl salicylates or methyl thiosalicylate

✍ Sharon E. Davis; A. Cameron Church; Rebecca C. Tummons; Charles F. Beam 📂 Article 📅 1997 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 305 KB

## Abstract C(α)‐Carboxylic acid esters were treated with excess lithium diisopropylamide, condensed with methyl salicylates or methyl thiosalicylate, followed by acid cyclization to either 4‐hydroxy‐3‐substituted, 2__H__‐1‐benzopyran‐2‐ones (coumarins), or 2__H__‐1‐benzothiopyran‐2‐ones (thiocouma

Preparation of some 3-hydroxy- and 3-mer

Preparation of some 3-hydroxy- and 3-mercapto-1,2,4-triazoles. Reaction of aliphatic selenone esters with semicarbazide and thiosemicarbazide derivatives

✍ Victor Israel Cohen 📂 Article 📅 1978 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 173 KB

ChemInform Abstract: Preparation of 4-Hy

ChemInform Abstract: Preparation of 4-Hydroxy-3-substituted, 2H-1-Benzopyran-2-ones and 2H-1-Benzothiopyran-2-ones from Carboxylic Esters and Methyl Salicylates or Methyl Thiosalicylate.

✍ S. E. DAVIS; A. C. CHURCH; R. C. TUMMONS; C. F. BEAM 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 29 KB 👁 1 views