Lithium Hydroxide → 3-(1,4-Dioxa-8-aza-spiro[4.5]dec-8-yl)-4-methyl-benzoic acid

HRID 1853949

반응식

HRID 1853949 반응식
C[O:2][C:3](=[O:21])[C:4]1[CH:9]=[CH:8][C:7]([CH3:10])=[C:6]([N:11]2[CH2:20][CH2:19][C:14]3([O:18][CH2:17][CH2:16][O:15]3)[CH2:13][CH2:12]2)[CH:5]=1.[OH-].[Li+]>>[O:15]1[C:14]2([CH2:19][CH2:20][N:11]([C:6]3[CH:5]=[C:4]([CH:9]=[CH:8][C:7]=3[CH3:10])[C:3]([OH:21])=[O:2])[CH2:12][CH2:13]2)[O:18][CH2:17][CH2:16]1

참가 물질

3

반응물 2

HCID 3939Lithium HydroxideHCID 673546753-(1,4-Dioxa-8-aza-spiro[4.5]dec-8-yl)-4-methyl-benzoic acid methyl ester

생성물 1

HCID 673566093-(1,4-Dioxa-8-aza-spiro[4.5]dec-8-yl)-4-methyl-benzoic acid

실험 절차

A solution of 3-(1,4-Dioxa-8-aza-spiro[4.5]dec-8-yl)-4-methyl-benzoic acid methyl ester (100 mg, 0.343 mmol] in 3 ml of mixed solvent [1:0.3:0.5 THF/water/methanol] was treated with lithium hydroxide (12.25 mg, 0.514 mmol]. The reaction mixture was stirred at room temperature for 6 hours, concentrated and acidified [pH=4] with 2M HCl. The precipitate obtained was filtered, washed with water and dried under vacuum. The crude material was washed with ether, air dried overnight to give desired product. i.e., 3-(1,4-Dioxa-8-aza-spiro[4.5]dec-8-yl)-4-methyl-benzoic acid [12] as yellow colored solid. On the basis of mass recovery (93.2 mg) the yield was assumed to be quantitative.

후처리

  1. concentrationconcentrated
  2. customThe precipitate obtained
  3. filtrationwas filtered
  4. washwashed with water
  5. customdried under vacuum
  6. washThe crude material was washed with ether, air
  7. customdried overnight

출처 및 근거

ORD 기록
ord-4f29474499c7484c88e9823d1adea9ae
출처 데이터셋
uspto-grants-2015_02
특허 번호
US08962637B2

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