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ChemicalBook CAS DataBase List (1S,2S)-trans-N-Boc-2-aminocyclopentanol

(1S,2S)-trans-N-Boc-2-aminocyclopentanol synthesis

7synthesis methods
24424-99-5 Synthesis
Di-tert-butyl dicarbonate

24424-99-5
823 suppliers
$13.50/25G

68327-04-8 Synthesis
(1S,2S)-trans-2-Aminocyclopentanol hydrochloride

68327-04-8
133 suppliers
$9.00/250mg

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Yield: 97.76%

Reaction Conditions:

with triethylamine in methanol for 22 h;

Steps:

L.1
Step 1. To a solution of (lS,2S)-2-aminocyclopentan-l-ol (41-1) HC1 salt (500.00 mg, 3.63 mmol) and triethylamine (1.10 g, 10.89 mmol, 1.51 mL) in MeOH (18.15 mL) was added Boc20 (1.58 g, 7.26 mmol). The reaction was stirred for 22 hour, concentrated under reduced pressure. Flash chromatography (ISCO system, silica (24 g), 0-50% ethyl acetate in hexane) provide 41-2 (714.2 mg, 3.55 mmol, 97.76% yield).

References:

TP THERAPEUTICS, INC.;CUI, Jingrong J.;LI, Yishan;ROGERS, Evan W.;ZHAI, Dayong;DENG, Wei;UNG, Jane WO2017/4342, 2017, A1 Location in patent:Paragraph 0528