1 2 3 4-TETRAHYDROCYCLOPENT(B) INDOLE

CAS No.：2047-91-8

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This product is a chemical product/pharmaceutical intermediate. It is not a drug, an active pharmaceutical ingredient (API), or a pharmaceutical-grade material. It has not been granted a drug approval number or a Chemical Drug Substance Approval Notice, has not passed drug-related review and approval, and is not manufactured, tested, or released in accordance with pharmaceutical GMP.
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1 2 3 4-TETRAHYDROCYCLOPENT(B) INDOLE Basic information

Product Name:	1 2 3 4-TETRAHYDROCYCLOPENT(B) INDOLE
Synonyms:	TETRAHYDROCYCLOPENT(B)INDOLE;2,3-Trimethyleneindole;NSC 112674;1,2,3,4-Tetrahydrocyclopent[b] indole 96%;1,2,3,4-Tetrahydro cyclopenta indole
CAS:	2047-91-8
MF:	C11H11N
MW:	157.21
EINECS:
Product Categories:	Building Blocks;Heterocyclic Building Blocks;Indoles;Building Blocks;C11;Chemical Synthesis;Heterocyclic Building Blocks
Mol File:	2047-91-8.mol

1 2 3 4-TETRAHYDROCYCLOPENT(B) INDOLE Chemical Properties

Melting point	100.5-105.5 °C(lit.)
Boiling point	160-162 °C(Press: 1 Torr)
density	1.200±0.06 g/cm3(Predicted)
storage temp.	Sealed in dry,Room Temperature
form	powder to crystaline
pka	17.83±0.20(Predicted)
color	Light yellow to Brown
λmax	230nm(EtOH aq.)(lit.)

Safety Information

Hazard Codes	Xi
Risk Statements	36/37/38
Safety Statements	26-36
WGK Germany	3

MSDS Information

1 2 3 4-TETRAHYDROCYCLOPENT(B) INDOLE Usage And Synthesis

Uses	• ;Reactant for thionium species-mediated functionalization at the 2α-position of indoles1• ;Reactant for preparation of tetramethylpiperidine-1-oxoammonium salts as oxidants2
Uses	1,2,3,4-Tetrahydrocyclopent[b]indole is used in the synthesis of BACE inhibitors. Also used to synthesize benzazocinecarboxylic acids as potential antiinflammatory agents.
Uses	Reactant for thionium species-mediated functionalization at the 2α-position of indoles Reactant for preparation of tetramethylpiperidine-1-oxoammonium salts as oxidants
General Description	1,2,3,4-Tetrahydrocyclopent[b] indole undergoes reduction in the presence of Pd/C and hydrogen gas to yield 1,2,3,3a,4,8b-hexahydrocyclopent[b]indole.

1 2 3 4-TETRAHYDROCYCLOPENT(B) INDOLE Preparation Products And Raw materials

Preparation Products

7-BROMO-1,2,3,4-TETRAHYDROCYCLOPENTA[B]INDOLE

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