✦ LIBER ✦

Asymmetric synthesis of α-amino acids and α-N-hydroxyamino acids via electrophilic amination of bornanesultam-derived enolates with 1-chloro-1-nitrosocyclohexane.

✍ Scribed by Wolfgang Oppolzer; Osamu Tamura

Publisher: Elsevier Science
Year: 1990
Tongue: French
Weight: 307 KB
Volume: 31
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(00)94411-3

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

Asymmetric Synthesis of α-Amino Acids an

Asymmetric Synthesis of α-Amino Acids and α-N-Hydroxyamino Acids from N-Acylbornane-10,2-sultams: 1-chloro-1-nitrosocyclohexane as a practical [NH] equivalent

✍ Wolfgang Oppolzer; Osamu Tamura; JöRg Deerberg 📂 Article 📅 1992 🏛 John Wiley and Sons 🌐 German ⚖ 1006 KB

nitrogen source. The bright-blue reagent 1, readily accessible by chlorination of cyclohexanone oxime [4], can safely be stored for a least 1 year at -30" but is preferably distilled in vacuo before use. In contrast to infamous N-nitroso derivatives, C-nitroso compound 1 proved not to be mutagenic i

Asymmetric synthesis of α-amino acid der

Asymmetric synthesis of α-amino acid derivatives via an electrophilic amination of chiral amide cuprates with Li t-butyl-N-tosyloxycarbamate

✍ Nan Zheng; Joseph D. Armstrong III; J.Christopher McWilliams; R.P. Volante 📂 Article 📅 1997 🏛 Elsevier Science 🌐 French ⚖ 218 KB

The utility of lithium t-butyl-N-tosyloxycarbamate (LiBTOC) as a ( + )NHBOC synthon in highly diastereoselective reactions with chiral cis-aminoindanol derived amide cuprates is described. The diastereoselectivities of these reactions ranged from 96% to greater than 99%. The subsequent transformatio

ChemInform Abstract: Asymmetric Synthesi

ChemInform Abstract: Asymmetric Synthesis of α-Amino Acid Derivatives via an Electrophilic Amination of Chiral Amide Cuprates with Li tert-Butyl-N- tosyloxycarbamate.

✍ N. ZHENG; J. D. III ARMSTRONG; J. C. MCWILLIAMS; R. P. VOLANTE 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 32 KB 👁 1 views

Asymmetric synthesis of threo β-hydroxy-

Asymmetric synthesis of threo β-hydroxy-α-N-methyl amino acids and MeBMT analogs via epoxides1. (Part 1)

✍ Chong-Qing Sun; Daniel H. Rich 📂 Article 📅 1988 🏛 Elsevier Science 🌐 French ⚖ 205 KB

ChemInform Abstract: Asymmetric Synthesi

ChemInform Abstract: Asymmetric Synthesis of α-Methyl-α-amino Acids via Diastereoselective Alkylation of (1S)-(+)-3-Carene Derived Tricyclic Iminolactone (V).

✍ Ta-Jung Lu; Cheng-Kun Lin 📂 Article 📅 2011 🏛 John Wiley and Sons ⚖ 73 KB 👁 1 views

Synthesis of (S)- and (R)- tert Leucine

Synthesis of (S)- and (R)- tert Leucine Enabling Direct Coupling with α-Amino Acid Esters via β-Lactam-Derived α-Amino Acid N-Carboxy Anhydrides.

✍ Claudio Palomo*; Iñaki Ganboa; Beatriz Odriozola; Anthony Linden 📂 Article 📅 1997 🏛 Elsevier Science 🌐 French ⚖ 507 KB

3S, 4R)-and (3R, 4S)-3-hydroxy-4-rerr-butyl &lactams on exposure to IM NaOCl and a catalytic amount of 2,2,6,6-tetramethy lpiperidinyl-l-oxyl (TEMPO) afforded et-amino acid N-carboxy anhydrides formally derived from both (S)-and (R)-tert-leucine amino acids. 01997 Published byElsevierScienceLtd.