✦ LIBER ✦

Preparation of 3-Oxo- and 3-Ethylideneazetidine Derivatives

✍ Scribed by Hans Bauman; Rudolf O. Duthaler

Publisher: John Wiley and Sons
Year: 1988
Tongue: German
Weight: 447 KB
Volume: 71
Category: Article
ISSN: 0018-019X
DOI: 10.1002/hlca.19880710514

No coin nor oath required. For personal study only.

✦ Synopsis

The context of this project and other approaches are discussed in more detail in [I] and also in the preceding paper 131. 'H-NMR (80 MHz, CDCI,): 1.4 1.8 (m, 2 main peaks, 3 H-C(2')); 4.75 (m. wx % 7,2 H-C(2), 2 H-C(4)); 5.2-5.6 (m. H-C(1')); 7.25-7.75 (m. C6H5CO). MS: 187 (16, Mc'), 172 (2), 105 (loo), 77 (37), 51 (10).

📜 SIMILAR VOLUMES

FeCI3-promoted [3+3] cycloaddition: Effi

FeCI3-promoted [3+3] cycloaddition: Efficient preparation of 1,2-dihydro-2-oxo-3-pyridinecarboxylate and 1,2-dihydro-2-oxo-3-pyridinecarboxamide derivatives

✍ Shuheng Li; Shaozhong Wang 📂 Article 📅 2008 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 176 KB

## Abstract magnified image A facile approach was developed on assembly of the 2‐pyridone nucleus by ferric chloride promoted [3+3] cycloaddition in propionic acid. The tandem process involves cyclization of Michael adduct followed by aromatization. Thus, different substituted 1,2‐dihydro‐2‐oxo‐3‐

ChemInform Abstract: FeCl3-Promoted [3 +

ChemInform Abstract: FeCl3-Promoted [3 + 3] Cycloaddition: Efficient Preparation of 1,2-Dihydro-2-oxo-3-pyridinecarboxylate and 1,2-Dihydro-2-oxo-3-pyridinecarboxamide Derivatives.

✍ Shuheng Li; Shaozhong Wang 📂 Article 📅 2009 🏛 John Wiley and Sons ⚖ 26 KB 👁 2 views

3-oxo-3-phosphapentopyranoses

✍ Christopher J. R. Fookes; Michael J. Gallagher 📂 Article 📅 1996 🏛 John Wiley and Sons 🌐 English ⚖ 444 KB 👁 1 views

Addition of methyl phosphinate to 2(R)-methoxy 3-oxapentanedial gives all eight possible diastereoisomeric 3-phosphapentopyranoses in very poor yield. Structures and stereochemistry are assigned on the basis of 'H, 318 NMR, and mass spectroscopy of their acetates.

Synthesis of 3-(4-Oxo-4H-quinolizinyl-3)

Synthesis of 3-(4-Oxo-4H-quinolizinyl-3) and 3-(4-Oxo-4H-pyridino[1,2-a]pyrimidinyl-3) substituted lactic acid derivatives

✍ Marko Škof; Jurij Svete; Branko Stanovnik 📂 Article 📅 2000 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 279 KB

## Abstract A one‐step ‘ring switching’ transformation of (__S__)‐3‐[(dimethylamino)methylidene]‐5‐(methoxycarbonyl)tetrahydrofuran‐2‐one (**4**) with 2‐pyridineacetic acid derivatives (**5–7**) and 2‐aminopyridines (**8, 9**) afforded the corresponding 3‐(4‐oxo‐4__H__‐quinolizinyl‐3)‐ **(15–17)**

Preparation of Triethyl Ortho-3-butynoat

Preparation of Triethyl Ortho-3-butynoate and its Conversion into 5-Oxo-3-alkynoate Esters and into Derivatives of 3,5-Dioxoalkanoate Esters

✍ Rolf Finding; Prof. Dr. Ulrich Schmidt 📂 Article 📅 1970 🏛 John Wiley and Sons 🌐 English ⚖ 216 KB 👁 1 views

Preparation of 2-phenyl-2-hydroxymethyl-

Preparation of 2-phenyl-2-hydroxymethyl-4-oxo-1,2,3,4-tetrahydroquinazoline and 2-methyl-4-oxo-3,4-dihydroquinazoline derivatives formation

✍ Pavel Hradil; Lubomír Kvapil; Jan Hlaváč; TomáŠ Weidlich; Antonín Lyčka; Karel L 📂 Article 📅 2000 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 448 KB 👁 1 views

## Abstract The cyclization of phenacyl anthranilate has been studied with the aim to develop the synthesis of 2‐(2′‐aminophenyl)‐4‐phenyloxazole. However, a different course of the reaction than expected was observed. 2‐Phenyl‐2‐hydroxymethyl‐4‐oxo‐1,2,3,4‐tetrahydroquinazoline (**3a**) was formed