1082041-85-7 | 5-Bromo-4-fluoro-1H-indazole

Packsize	Purity	Availability	Price	Discounted Price
100mg	97%	in stock	$6.00	$4.00
250mg	97%	in stock	$8.00	$5.00
1g	97%	in stock	$13.00	$9.00
5g	97%	in stock	$56.00	$39.00
25g	97%	in stock	$263.00	$184.00

Description

• Catalog Number: AB47478
• Chemical Name: 5-Bromo-4-fluoro-1H-indazole
• CAS Number: 1082041-85-7
• Molecular Formula: C7H4BrFN2
• Molecular Weight: 215.0225
• MDL Number: MFCD11007927
• SMILES: Brc1ccc2c(c1F)cn[nH]2

Upstream Synthesis Route

The upstream synthesis route of 5-Bromo-4-fluoro-1H-indazole typically involves constructing the indazole core followed by halogenation. Here is a streamlined synthesis route:

1. Start with 4-fluoroaniline as the starting material. Protect the amino group using a suitable protecting group such as a Boc (tert-butoxycarbonyl) group to yield N-Boc-4-fluoroaniline.

2. Subject the N-Boc-4-fluoroaniline to a nucleophilic substitution reaction with ethyl bromoacetate in the presence of a base like potassium carbonate (K2CO3) to obtain the corresponding ethyl N-Boc-4-fluoro-phenylacetate.

3. Perform a cyclization reaction on the ethyl N-Boc-4-fluoro-phenylacetate using hydrazine hydrate to form the indazole ring, resulting in ethyl N-Boc-5-bromo-4-fluoro-1H-indazole-3-carboxylate.

4. Remove the Boc protecting group using acid such as hydrochloric acid (HCl) to yield the final product, 5-Bromo-4-fluoro-1H-indazole.

Each step should be optimized for yield, purity, and reaction conditions. Isolation and purification of intermediates may be necessary to ensure a high-quality final product. The described route is generic and may be customized based on specific reagents, catalysts, and conditions available for the synthesis.