Doxazosin → Doxazosin Mesylate

HRID 2301284

반응식

HRID 2301284 반응식
[CH3:1][S:2]([OH:5])(=[O:4])=[O:3].[CH3:6][O:7][C:8]1[CH:9]=[C:10]2[C:19]([NH2:20])=[N:18][C:17]([N:21]3[CH2:26][CH2:25][N:24]([C:27]([CH:29]4[O:38][C:37]5[CH:36]=[CH:35][CH:34]=[CH:33][C:32]=5[O:31][CH2:30]4)=[O:28])[CH2:23][CH2:22]3)=[N:16][C:11]2=[CH:12][C:13]=1[O:14][CH3:15].CN1CCCC1=O>CO>[CH3:6][O:7][C:8]1[CH:9]=[C:10]2[C:19]([NH2:20])=[N:18][C:17]([N:21]3[CH2:22][CH2:23][N:24]([C:27]([CH:29]4[O:38][C:37]5[CH:36]=[CH:35][CH:34]=[CH:33][C:32]=5[O:31][CH2:30]4)=[O:28])[CH2:25][CH2:26]3)=[N:16][C:11]2=[CH:12][C:13]=1[O:14][CH3:15].[CH3:1][S:2]([OH:5])(=[O:4])=[O:3]

참가 물질

5

반응물 3

HCID 3157DoxazosinHCID 6395Methanesulfonic Acid2회HCID 13387N-methyl-2-pyrrolidone

생성물 1

HCID 62978Doxazosin Mesylate수율 136.9%

시약·촉매·용매 1

HCID 887Methanol용매

실험 절차

6.1 g of anhydrous methanesulfonic acid were added to a stirred mixture of 27.1 g of doxazosin, 54 ml of N-methyl-2-pyrrolidone and 250 ml of methanol in a 500 ml three-neck round-bottom flask. The internal temperature rose to 30° C. during this, and a solution was produced. After the addition of methanesulfonic acid was complete, the reaction mixture was filtered into a second 500 ml three-neck round-bottom flask, and the filtrate was stirred for 5 h. After the end of the stirring time, the resulting precipitate was filtered off with suction and washed 2× with 50 ml of methanol each time. 45 g of moist doxazosin mesylate (modification D) were obtained. This corresponds to 28.5 g of dry substance and a yield of 86.7%.

후처리

  1. customrose to 30° C.
  2. customwas produced
  3. filtrationthe reaction mixture was filtered into a second 500 ml three-neck round-bottom flask
  4. filtrationAfter the end of the stirring time, the resulting precipitate was filtered off with suction
  5. washwashed 2× with 50 ml of methanol each time

출처 및 근거

ORD 기록
ord-869cb79e62eb4d3daf3c2d0f09af5670
출처 데이터셋
uspto-grants-2002_12
특허 번호
US06500830B1

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