反応 #411268

反応方程式

1H-tetrazole

NaH

Thr

N-dodecyl-3-bromo-4-(2-bromoethoxy)-5-(3-methoxyphenyl)benzamide

→

white solid

収率 25.0%

5-Bromo-6-(2-tetrazol-1-yl-ethoxy)-3′-methoxy-biphenyl-3-carboxylic acid dodecylamide

収率 25.0%

溶媒

EtOAc

—

Hexanes

EtOAc

DMSO

THF

—

Hexanes

THF

—

Hexanes

EtOAc

反応条件

後処理

1. 1
   workup.ADDITIONwas added
2. 2
   温度to warm up to room temperature for one-half hour
3. 3
   温度the reaction was then heated at 65° C. overnight
4. 4
   その他was quenched
5. 5
   workup.ADDITIONdiluted with water
6. 6
   抽出extracted with EtOAc (3×)
7. 7
   乾燥The combined organic layers were dried over Na2SO4
8. 8
   その他the solvent removed in vacuo
9. 9
   その他to give a brown-yellow oil

実験手順

To a solution of 1H-tetrazole (28 mg, 0.4 mmol) in 1 mL anhydrous THF at 0° C. was added NaH (10 mg, 0.421 mmol). The reaction mixture was stirred for 10 min at 0 DC after which point a solution of N-dodecyl-3-bromo-4-(2-bromoethoxy)-5-(3-methoxyphenyl)benzamide (160 mg, 0.276 mmol) in 2.5 mL anhydrous THF was added. The reaction mixture was stirred at 0° C. for 10 min then allowed to warm up to room temperature for one-half hour. Then 700 μL of DMSO was added and the reaction was then heated at 65° C. overnight. Thr reaction was quenched and diluted with water and extracted with EtOAc (3×). The combined organic layers were dried over Na2SO4 and the solvent removed in vacuo to give a brown-yellow oil. The crude material was subjected to flash column chromatography (25% EtOAc:75% Hexanes to 40% EtOAc:60% Hexanes to 50% EtOAc:50% Hexanes) to yield 40 mg, 25% of a white solid. mp 100-1° C.; 1H NMR (DMSO-d6) δ0.88 (t, J=6.80 Hz, 3H); 1.25-1.37 (m, 18H); 1.60 (quintet, J=7.14 Hz, 2H); 3.43 (q, J=7.14 Hz, 2H); 3.84 (s, 3H); 3.96 (t, J=4.86 Hz, 2H); 4.57 (t, J=4.86 Hz, 2H); 6.01 (t, J=5.00 Hz, 1H); 6.93-6.95 (m, 3H); 7.27-7.32 (m, 1H); 7.64 (d, J=2.20 Hz, 1H); 7.94 (d, J=1.98 Hz, 1H); 8.68 (s, 1H); IR 3330, 2900, 2840, 1625, 1600, 1520, 1460, 1310, 1300, 1235, 1175, and 1030 cm−1; mass spectrum [(+)ESI] m/z 586/588 [M+H]+; Anal Calcd. For C29H40BrN5O3: C, 59.38; H, 6.87; N, 11.94; Found: C, 59.46; H, 6.68; N, 11.77.

出典