Triphenylphosphine → HCID 178501290、化合物

HRID 1194917ノート

反応式

HRID 1194917 の反応式
N(C(OCC)=O)=NC(OCC)=O.[OH:13]/[N:14]=[C:15](/[C:23](=[O:25])[CH3:24])\[C:16]([O:18][C:19]([CH3:22])([CH3:21])[CH3:20])=[O:17].O[C@@H:27]1[CH2:32][CH2:31][C@H:30]([C:33]([O:35][CH3:36])=[O:34])[CH2:29][CH2:28]1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1>O1CCCC1>[C:19]([O:18][C:16](=[O:17])/[C:15](=[N:14]\[O:13][C@H:27]1[CH2:32][CH2:31][C@H:30]([C:33]([O:35][CH3:36])=[O:34])[CH2:29][CH2:28]1)/[C:23](=[O:25])[CH3:24])([CH3:21])([CH3:20])[CH3:22]

参加物

6

反応物 4

HCID 11776TriphenylphosphineHCID 220568ethyl N-ethoxycarbonyliminocarbamateHCID 178468383HCID 178468383、化合物HCID 178501284HCID 178501284、化合物

生成物 1

HCID 178501290HCID 178501290、化合物収率 33.2%

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒2 回

実験手順

A solution of diethyl azodicarboxylate (1.62 ml) in tetrahydrofuran (5 ml) was added dropwise to a solution of tert-butyl (Z)-2-hydroxyimino-3-oxobutyrate (1.6 g), methyl cis-4-hydroxycyclohexanecarboxylate (1.9 g) and triphenylphosphine (2.7 g) in tetrahydrofuran (20 ml) over 15 min at room temperature. The mixture was stirred for 18h, then the solvent removed under reduced pressure. The residue was chromatographed on silica to give the title compound (0.93 g, 33%) as a colourless liquid. νmax (film) 2950, 1730, and 1690 cm-1. δH (CDCl3) 1.47-1.64 (3H, m), 1.53 (9H, s), 1.56 (3H, d, J 5.3 Hz), 2.05 (2H, m), 2.17 (2H, m), 2.35 (1H, m), 2.37 (3H, s), 3.69 (3H, s), and 4.24 (1H, tt, J 4.1, 10.0 Hz), δC (CDCl3) 25.2, 26.3 (2C), 28.1 (3C), 29.9 (2C), 41.6, 51.7, 82.9, 84.0, 160.6, 175.5, and 193.0. [Mass spectrum +ve ion (ammonia) MH+ (328), MNH4+ (345)].

後処理

  1. customthe solvent removed under reduced pressure
  2. customThe residue was chromatographed on silica

出典と根拠

ORDレコード
ord-762f1e9a29a64a109357603fb27a61b2
出典データセット
uspto-grants-1989_03
特許番号
US04816452

反応ノート

読み込み中…