660862-47-5

Basic information

• Product Name: 2-Piperazineethanol,(2S)-(9CI)
• Synonyms: 2-Piperazineethanol,(2S)-(9CI);(2S)-2-Piperazineethanol, dihydrochloride;(2S)-2-Piperazineethanol;2-[(2S)-piperazin-2-yl]ethanol;(S)-2-(piperazin-2-yl)ethanol
• CAS NO: 660862-47-5
• Molecular Formula: C₆H₁₄N₂O
• Molecular Weight: 130.19
• Product Categories: PIPERAZINE
• Mol File: 660862-47-5.mol

Chemical Properties

• Appearance: /
• CAS DataBase Reference: 2-Piperazineethanol,(2S)-(9CI)(CAS DataBase Reference)
• NIST Chemistry Reference: 2-Piperazineethanol,(2S)-(9CI)(660862-47-5)
• EPA Substance Registry System: 2-Piperazineethanol,(2S)-(9CI)(660862-47-5)

Safety Data

• Hazardous Substances Data: 660862-47-5(Hazardous Substances Data)

Upstream product

• 252873-54-4 benzyl 2-[(2S)-4-benzyl-3,6-dioxopiperazin-2-yl]acetate 
• 321918-75-6 benzyl (3S)-4-[benzyl-(2-ethoxy-2-oxoethyl)amino]-3-(tert-butoxycarbonylamino)-4-oxobutanoate 
• 477220-33-0 2-[(2S)-4-benzylpiperazin-2-yl]ethanol 
• 52661-95-7 (S)-ethyl 2-(3,6-dioxopiperazin-2-yl)acetate 
• 660862-43-1 (S)-2-(1,4-dibenzylpiperazin-2-yl)ethanol 

Downstream Products

• 1334483-05-4 (S)-tert-butyl 3-(4-benzoyl-2-(2-hydroxyethyl)piperazin-1-yl)propanoate 
• 1334482-99-3 C₂₀H₂₈N₂O₃ 
• 764714-59-2 ((7R,9aS)-octahydro-1H-pyrido[1,2-a]pyrazin-7-yl)methanol 
• 1045863-73-7 dibenzyl (2S)-2-(2-hydroxyethyl)piperazine-1,4-dicarboxylate 
• 660862-48-6 (S)-2-(2-hydroxyethyl)piperazine-1,4-dicarboxylic acid di-tert-butyl ester 

Relevant articles and documents

KRAS G12C INHIBITORS

The present invention provides compounds of the formula: where R1, R2, R3, R4, R5, A, B, and Y are as described herein, pharmaceutically acceptable salts thereof, and methods of using these compounds and salts for treating patients for cancer.

HETEROARYLDIHYDROPYRIMIDINE DERIVATIVES AND METHODS OF TREATING HEPATITIS B INFECTIONS

Provided herein are compounds useful for the treatment of HBV infection in a subject in need thereof, pharmaceutical compositions thereof, and methods of inhibiting, suppressing, or preventing HBV infection in the subject.

COMBINATION OF HEPATITIS B VIRUS (HBV) VACCINES AND DIHYDROPYRIMIDINE DERIVATIVES AS CAPSID ASSEMBLY MODULATORS

Therapeutic combinations of hepatitis B virus (HBV) vaccines and capsid assembly modulators (CAMs), such as dihydropyrimidine derivatives are described. Methods of inducing an immune response against HBV or treating an HBV-induced disease, particularly in individuals having chronic HBV infection, using the disclosed therapeutic combinations are also described.

Preparation method of chiral heterocyclic compound

The invention discloses a preparation method of a chiral heterocyclic compound. The invention provides the preparation method of the chiral heterocyclic compound shown as a formula 3-1 or 3-2. The preparation method comprises the following steps: carrying

Synthesis of a bicyclic piperazine from l-aspartic acid and application of a fluoride-promoted SNAr coupling

The process development is reported of a pivotal C-N bond formation involving ((7R,9aS)-octahydro-1H-pyrido[1,2-a]pyrazin-7-yl)methanol (2) undergoing nucleophilic aromatic substitution with 3-chlorobenzo[d]isoxazole (3) to furnish ((7R,9aS)-2-(benzo[d]isoxazol-3-yl)octahydro-1H-pyrido[1,2-a] pyrazin-7-yl)methanol (4) as a key intermediate for a family of compounds (1). Essential to the success of the coupling is the use of fluoride in combination with a phase transfer catalyst. The development of an alternative route to bicyclic piperazine 2 that uses l-aspartic acid (20) as a starting material to avoid the need for a classical salt resolution is described.

SUBSTITUTED PIPERAZINES OF AZEPINES, OXAZEPINES, AND THIAZEPINES

Described herein are antipyschotic compounds of formula (I) wherein: is an optionally benzo-fused five or six member aromatic ring having zero to three hetero atoms independently selected from N, O, and S; R1 is hydrogen, (C1-6) fluoroalkyl, (C3-6) cycloalkyl, or (C1-4) alkyl, wherein the (C1-4) alkyl is unsubstituted or substituted with hydroxy, methoxy, ethoxy, OCH2CH2OH, -CN, imidazolidin-2-one, phenyl, or tetrazole wherein tetrazole is unsubstituted or substituted with (C1-4) alkyl; R2 is H, halogen, (C1-6) fluoroalkyl, (C3-6) cycloalkyl, OR6, SR6, NO2, CN, COR6, C(O)OR6, C(OH)R6, CONR7R8, phenyl or (C1-6) alkyl, wherein the (C1-6) alkyl is unsubstituted or substituted with a hydroxy; R3 is hydrogen, (C 1-6)fluoroalkyl , (C3-6) cycloalkyl, (C2-6) alkenyl, phenyl, monocyclic heteroaromatic, bicyclic heteroaromatic, or (C1-4)alkyl wherein (C1-4) alkyl is unsubstituted or substituted with a phenyl; R4 and R5 are independently selected from hydrogen, halogen, (C1-6) alkyl, (C1-6) fluoroalkyl, OR9, SR9, NO2, CN, or COR9; R6 is hydrogen, (C1-6) fluoroalkyl, or (C1-6) alkyl; R7 and R8 are independently hydrogen, or (C1-6) alkyl; R9 is hydrogen, (C1-6) fluoroalkyl, (C1-6) alkyl; Alk is (C1-4) alkylene unsubstituted or substituted with a hydroxy; Y is oxygen, sulfur, SO2, or a bond; X is CH2, C=O, S, O, or SO2; Z is hydrogen, halogen, (C1-6) alkyl, (C1-6)fluoroalkyl, -OH, (C1-6) alkoxy, (C1-6) fluoroalkoxy, (C1-6) alkylthio, (C1-6) acyl, (C1-4)alkylsulfonyl, -OCF3, -NO2, - CN, carboxamido which may be substituted on the nitrogen by one or two (C1-4) alkyl groups, and -NH2 in which one of the hydrogens may be replaced by a (C1-4) alkyl group and the other hydrogen may be replaced by either a (C1-4) alkyl group, a (C1-6) acyl group, or a (C1-4) alkylsulfonyl group; the phenyl of R1, R2 or R3 is independently unsubstituted or substituted with one to three substituents independently selected from Z; the monocyclic heteroaromatic of R3 is unsubstituted or substituted with one to three substituents independently selected from Z; the bicyclic heteroaromatic of R3 is unsubstituted or substituted with one to three substituents independently selected from Z; and salts, solvates, and crystal forms thereof. Also described are the use of the compounds of formula (I) as antagonists of the dopamine D2 receptor and as agents for the treatment of psychosis and bipolar disorders, and pharmaceutical formulations of the compounds of formula (I).

PIPERAZINE SUBSTITUTED ARYL BENZODIAZEPINES

Described herein are compounds of formula (I) wherein: is an optionally benzo-fused five or six member aromatic ring having zero to three hetero atoms independently selected from N, S, and O; Alk is (C1-4) alkylene or hydroxy substituted (C1-4) alkylene; X is oxygen or sulfur; R1 is hydrogen, (C1-6) fluoroalkyl, (C3-6) cycloalkyl, or (C1-4) alkyl, wherein the (C1-4) alkyl is unsubstituted or substituted with hydroxy, methoxy, ethoxy, OCH2CH2OH, or -CN; R2 is H, halogen, (C1-6) fluoroalkyl, (C1-6) cycloalkyl, OR4, SR4, N02, CN, COR4, C(O)OR4, CONR5R6 , NR5R6, S02NR5R6, NR5COR4, NR5SO2R4, optionally substituted aromatic, or (C1-6) alkyl, wherein (C1-6) alkyl is unsubstituted or substituted with a hydroxy group; R3 is hydrogen, (C1-6) fluoroalkyl, (C2-6) alkenyl, Ar, (C1-4)alkyl-Ar, or (C1-4) alkyl wherein (C1-4) alkyl is unsubsituted or substituted with a phenyl; R4 is hydrogen, (C1-6 alkyl, (C1-6) fluoroalkyl, or optionally substituted aromatic; R5 and R6 are independently hydrogen, (C1-6) alkyl, or optionally substituted aromatic, R7 is hydrogen, (C1-6) alkyl, (C1-6) fluoroalkyl, or optionally substituted aromatic; R8 and R9 are independently hydrogen, (C1-6) alkyl, or optionally substituted aromatic; Ar is optionally substituted phenyl, napthyl, monocyclic heteroaromatic or bicyclic heteroaromatic; Z1 and Z2 are independently selected from hydrogen, halogen, (C1-6) alkyl, (C1-6) fluoroalkyl, OR7, SR7, NO2, CN, COR7, CONR8R9, NR8R9, and optionally substituted aromatic; and all salts, solvates, optical and geometric isomers, and crystalline forms thereof. Also, described are the use of the compounds of formula (I) as antagonists of the dopamine D2 receptor and as agents for the treament of psychosis and bipolar disorders, and pharmaceutical formulations of the compounds of formula (I).