✦ LIBER ✦

Synthesis of indolizines starting from pyrylium salts

✍ Scribed by Antonie Dinculescu; Teodor-Silviu Balaban; Alexandru T Balaban

Book ID: 104227725
Publisher: Elsevier Science
Year: 1987
Tongue: French
Weight: 161 KB
Volume: 28
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(00)96307-x

No coin nor oath required. For personal study only.

✦ Synopsis

B-Ii-Pyridinium acetaldehydes with alkyl substituents in the 2 and 6 positions of the pyridiniwn ring, obtained from the mrresponding pyryliwn salts, cyclise in aZkaline mediwn to new indolizines. This high-yieZd reaction sequence is optimal for incUisines unsubstituted in the five-membered ring which are difficultly accessible by other methods.

📜 SIMILAR VOLUMES

SYNTHESIS OF ALKYL INDOLIZINES FROM PYRY

SYNTHESIS OF ALKYL INDOLIZINES FROM PYRYLIUM SALTS

✍ Dinculescu, Antonie; Balaban, Teodor-Silviu; Balaban, Alexandru T. 📂 Article 📅 1988 🏛 Taylor and Francis Group 🌐 English ⚖ 292 KB

Synthesis of Chlorinated Pyrylium Salts

✍ Prof. Dr. A. Roedig; Dr. M. Schlosser; Dipl.-Chem. H.-A. Renk 📂 Article 📅 1966 🏛 John Wiley and Sons 🌐 English ⚖ 198 KB 👁 1 views

At the reaction temperatures required (between 120 and 14OOC) the product sublimes and deposits in the cooler part of the apparatus as needle-shaped crystals, often twinned; the vanadium tetrachloride formed as by-product is removed in the stream of chlorine (ca. 4 litersihr). In three hours, 500 mg

Stereocontrolled Catalytic Synthesis of

Stereocontrolled Catalytic Synthesis of Substituted Hydroxyethylpiperidines from Pyrylium Salts

✍ A. G. Golikov; P. V. Reshetov; A. P. Kriven'ko 📂 Article 📅 2002 🏛 Springer US 🌐 English ⚖ 91 KB

Stereocontrolled Catalytic Synthesis of

Stereocontrolled Catalytic Synthesis of Substituted Hydroxyethylpiperidines from Pyrylium Salts.

✍ A. G. Golikov; P. V. Reshetov; A. P. Kriven'ko 📂 Article 📅 2003 🏛 John Wiley and Sons ⚖ 91 KB

Arsenic Compounds in Organic Synthesis:

Arsenic Compounds in Organic Synthesis: Pentamethinium Salts from Aminoarsanes and Pyrylium Salts

✍ Dr. Yves Madaule; Myriam Ramarohetra; Dr. Jean-Gérard Wolf; Prof. Dr. Jean-Paul 📂 Article 📅 1991 🏛 John Wiley and Sons 🌐 English ⚖ 379 KB 👁 1 views

Most promising for future exploration are the cocyclizations of the enantiomerically pure nucleoside models 4b-d, bearing what might be considered chiral auxiliary sugar substituents. Their potential utility is demonstrated in the highly diastereoselective construction of 6e. 5) As discussed previo

Synthesis of pyrylium salts with functio

Synthesis of pyrylium salts with functional substituents

✍ V. I. Dulenko; N. N. Alekseev; V. M. Golyak 📂 Article 📅 1975 🏛 Springer US 🌐 English ⚖ 61 KB