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Toluene → 5,7-Dimethyl-3,3a,7,7a-tetrahydro-1H-4-thia-2-aza-cyclopenta[alpha]pentalene-2-carboxylic acid ethyl ester

HRID 30262
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HRID 30262 반응식
[CH2:1]([O:3][C:4]([N:6]1[CH2:13][CH:12]2[CH:8]([CH:9]([CH3:18])[C:10]3[CH:16]=[C:15](Br)[S:14][C:11]=32)[CH2:7]1)=[O:5])[CH3:2].[CH3:19][Zn]C.C1(C)C=CC=CC=1>O1CCOCC1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2]>[CH2:1]([O:3][C:4]([N:6]1[CH2:13][CH:12]2[CH:8]([CH:9]([CH3:18])[C:10]3[CH:16]=[C:15]([CH3:19])[S:14][C:11]=32)[CH2:7]1)=[O:5])[CH3:2]
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참가 물질

6

반응물 3

HCID 1140TolueneHCID 1317270345-Bromo-7-methyl-3,3a,7,7a-tetrahydro-1H-4-thia-2-aza-cyclopenta[alpha]pentalene-2-carboxylic acid ethyl esterHCID 178477796HCID 178477796, 화합물

생성물 1

HCID 1317270365,7-Dimethyl-3,3a,7,7a-tetrahydro-1H-4-thia-2-aza-cyclopenta[alpha]pentalene-2-carboxylic acid ethyl ester수율 95%

시약·촉매·용매 2

HCID 44119782
Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)
촉매
HCID 312751,4-Dioxane용매

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온도
22 °C

실험 절차

A solution of the product from step j) (284 mg, 0.86 mmol) in dioxane (4.3 ml) was treated with Pd(dppf)2Cl2 (42 mg, 0.051 mmol) and a 2M solution of dimethylzinc in toluene (0.86 ml, 1.72 mmol) at 102° C. for 1 hour. The reaction was cooled to 22° C. and carefully quenched with sat. NH4Cl (3 ml). After the effervescence subsided, the reaction was extracted with EtOAc (3×50 ml). The combined organic layers were dried (MgSO4) passed through a plug of silica-gel eluting with 50:50 hexanes:EtOAc to provide the subtitle compound (216 mg, 95% over 3-steps). MS calculated for C14H19NO2S+H 266, observed 266.

후처리

  1. customcarefully quenched with sat. NH4Cl (3 ml)
  2. extractionthe reaction was extracted with EtOAc (3×50 ml)
  3. dry with materialThe combined organic layers were dried (MgSO4)
  4. washeluting with 50:50 hexanes

출처 및 근거

ORD 기록
ord-f161ac2f1f7944ba8d2010d388c80939
출처 데이터셋
uspto-grants-2008_09
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US07423056B2

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