HRID14438

反应详情

EQUATION

反应方程式

HRID 14438 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

2

PROCEDURE

实验过程

By the procedure for reaction of benzylamine with methyl cinnamyl carbonate, the reaction of aniline (130 mg, 1.40 mmol) and methyl cinnamyl carbonate (188 mg, 0.980 mmol) with [(COD)Ir(κ2-L1)L1] (Ir-2) (13.8 mg, 0.0100 mmol) and [(COD)IrCl]2 (3.4 mg, 0.0050 mmol) as catalyst was conducted at room temperature for 2 h. 1H NMR analysis of the crude reaction mixture indicated that the ratio of regioisomers was greater than 99/1. The mixture was then purified by flash column chromatography on silica gel (1.5% ethyl acetate in hexanes) to give 81% yield. HPLC analysis indicated that the enantiomeric excess of the product was 97% [Diacel Chiralcel® OD-H (0.46 cm×25 cm); hexanes/2-propanol=99.75/0.25; flow rate=0.6 mL/min; detection wavelength=254 nm; TR=19.1 (major) min., 20.3 min. (minor)]. [α]D20=−12.0 (c 2.10, CHCl3); 1H NMR (400.13 MHz, C6D6) δ 7.44-7.24 (m, 5H), 7.20-7.10 (m, 2H), 6.69 (t, J=7.2 Hz, 1H), 6.60 (d, J=8.0 Hz, 2H), 6.04 (ddd, J=16.8, 10.4, 6.4 Hz, 1H), 5.28 (dt, J=17.2, 1.2 Hz, 1H), 5.22 (dt, J=10.0, 1.2 Hz, 1H), 4.94 (t, J=4.4 Hz, 1H), 4.04 (br s, 1H). 13C NMR (100.5 MHz, C6D6) δ .61.1 (s, CH), 114.2 (s, CH═CH2), 115.9 (s, CH═CH2), 118.2, 127.7, 127.8, 129.1, 129.6, 139.6 (all s, Ar—CH), 142.4 (s, Ar—C), 147.8 (s, Ar—C).

WORKUP

后处理

  1. custom1H NMR analysis of the crude reaction mixture
  2. customThe mixture was then purified by flash column chromatography on silica gel (1.5% ethyl acetate in hexanes)
  3. customto give 81% yield