𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Asymmetric Hydroformylation of α-[2H]-Styrene. Preliminary Communication

✍ Scribed by Annibale Stefani; Dante Tatone

Publisher
John Wiley and Sons
Year
1977
Tongue
German
Weight
149 KB
Volume
60
Category
Article
ISSN
0018-019X

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

The hydroformylation of α‐[^2^H]‐styrene in the presence of an asymmetric rhodium‐catalyst afforded two optically active isomeric aldehydes. The origin of the asymmetric induction is discussed on the basis of the chirality and the optical purity of the two products.

📜 SIMILAR VOLUMES

Asymmetric α-Acetoxylation of Carboxylic
Asymmetric α-Acetoxylation of Carboxylic Esters. Preliminary Communication
✍ Wolfgang Oppolzer; Philip Dudfield 📂 Article 📅 1985 🏛 John Wiley and Sons 🌐 German ⚖ 207 KB 👁 1 views

## Abstract Using the readily accessible chiral auxiliaries **1**–**3** the sulfonamide‐shielded __O__‐silylated esters **5** underwent π‐face‐selective α‐acetoxylation on successive treatment with Pb(OAc)~4~ and NEt~3~ HF to give after recrystallization α‐acetoxy ester **6** in 55–67% yields and i

Photoinduced reactions of aryl-2H-azirin
Photoinduced reactions of aryl-2H-azirines with carbonyl compounds. Preliminary communication
✍ H. Giezendanner; M. Märky; B. Jackson; H.-J. Hansen; H. Schmid 📂 Article 📅 1972 🏛 John Wiley and Sons 🌐 German ⚖ 217 KB

## Abstract Irradiation of 3‐phenyl‐(**4**), 2‐methyl‐3‐phenyl‐(**8**), and 2,3‐diphenyl‐2__H__‐azirine (**10**), in benzene solution in the presence of aldehydes, yields the corresponding aryl‐3‐oxazolines. Photochemical reaction of **4** and **10** with carbon dioxide leads to the formation of 4‐

Synthesis and Photochemistry of 2,2-Dime
Synthesis and Photochemistry of 2,2-Dimethyl-3(2H)-thiophenone, a Ketonic Tautomer of 3-Hydroxythiophene. Preliminary Communication
✍ Elke Anklam; Ramin Ghaffari-Tabrizi; Hermann Hombrecher; Sabine Lau; Paul Margar 📂 Article 📅 1984 🏛 John Wiley and Sons 🌐 German ⚖ 188 KB 👁 1 views

## Abstract On irradiation (λ = 366 nm), the 4‐thia‐2‐cyclopentenone **3a** behaves in complete analogy to the oxa‐enone **3c** undergoing regio‐ and stereospecific cyclodimerization, regiospecific cycloaddition with 2‐methylpropene and cycloaddition with 2,3‐dimethyl‐2‐butene to afford cyclobutane

Stereoselective Cyclopropanation of 2-[(
Stereoselective Cyclopropanation of 2-[(S)-(4-Methylphenyl)sulfinyl]cyclopent-2-en-1-one with Sulfur Ylides and α-Halo Carbanions. Preliminary Communication
✍ Marian Mikołajczyk; Wanda H. Midura; Elena Michedkina; Agnieszka D. Filipczak; M 📂 Article 📅 2005 🏛 John Wiley and Sons 🌐 German ⚖ 228 KB

## Abstract The cyclopropanation of the title compound (__S__)‐**2** with various sulfur ylides has been examined. The reaction with methylenesulfonium ylides gave the corresponding cyclopropanes **4** with low diastereoselectivity. The formation of the second product **5** arising from the subsequ