Name: 2-(2-Bromoethoxy)tetrahydro-2H-pyran. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: 2-(2-Bromoethoxy)tetrahydro-2H-pyran, is researched, Molecular C7H13BrO2, CAS is 17739-45-6, about Regiocontrolled Synthesis of 6,7-Dihydro-4H-pyrazolo[5,1-c][1,4]oxazines. Author is Lindsay-Scott, Peter J.; Rivlin-Derrick, Eloise.
Synthesis of 6,7-dihydro-4H-pyrazolo[5,1- c][1,4]oxazines wad achieved in 3-4 steps from com. available pyrazoles. Optimization of a protected hydroxyethyl group on N1 enabled the regiocontrolled construction of pyrazole-5-aldehydes in high yields; subsequent deprotection and reduction generated fused heterocyclic scaffolds bearing multiple substitution patterns. Moreover, the intermediate pyrazole lactols were showed to be versatile synthetic building blocks.
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Reference:
Pyridazine – Wikipedia,
Pyridazine | C4H4N2 – PubChem