تفاعل #163437

معادلة التفاعل

solution

N-[(5Z)-4-[(1Z)-but-1-enyl]-2-tert-butylisothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide

1,2-dimethoxyethane

diethylzinc

diiodomethane

→

title compound

المردود 77.0%

N-[(5Z)-2-tert-butyl-4-(2-ethylcyclopropyl)isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide

المردود 77.0%

المذيبات

CH2Cl2

ظروف التفاعل

المعالجة

1. 1
   workup.ADDITIONAfter the addition
2. 2
   درجة الحرارةto warm to room temperature
3. 3
   workup.STIRRINGstir overnight
4. 4
   أخرىThe reaction was quenched with NH4Cl
5. 5
   استخلاصacetone and extracted with EtOAc (2×)
6. 6
   تجفيفdried (MgSO4)
7. 7
   ترشيحfiltered
8. 8
   أخرىsolvent evaporated
9. 9
   أخرىThe residue was purified by column chromatography

الإجراء التجريبي

To a solution of CH2Cl2 (10 mL) and 1,2-dimethoxyethane (95 mg, 1.06 mmol) at −10° C. was added diethylzinc (130 mg, 1.06 mmol). To this solution was added dropwise diiodomethane (565 mg, 2.1 mmol). After the addition was complete, the resulting clear solution was stirred for 10 min at −10° C. A solution of Example 25B (200 mg, 0.53 mmol) was added to the reaction mixture, which was allowed to warm to room temperature and stir overnight. The reaction was quenched with NH4Cl then acetone and extracted with EtOAc (2×). The organics were combined, dried (MgSO4), filtered and solvent evaporated. The residue was purified by column chromatography using an Analogix® Intelliflash280™ (SiO2, 0-50% Hexane in ethyl acetate) to afford 159 mg (77%) of the title compound. 1H NMR (400 MHz, CDCl3) δ ppm 0.59 (q, J=5.52 Hz, 1 H) 0.92 (t, J=7.36, 6.44 Hz, 3 H) 0.94-1.14 (m, 2 H) 1.16-1.29 (m, 2 H) 1.65 (s, 9 H) 2.11-2.33 (m, 1 H) 3.91 (s, 3 H) 6.91 (d, J=8.90 Hz, 1 H) 7.33 (dd, J=8.90, 2.76 Hz, 1 H) 7.81 (s, 1 H) 8.08 (d, J=2.76 Hz, 1 H); MS (DCI/NH4+) m/z 393 (M+H)+.

المصدر