hemistry is a science major with cience and engineering. The main research directions are chemical synthesis, preparation and modification of special coatings, and research on the structure and performance of functional materials , Application In Synthesis of 5-(Bromomethyl)-2,3-dihydro-1,4-benzodioxine. Introducing a new discovery about 214894-89-0, Name is 5-(Bromomethyl)-2,3-dihydro-1,4-benzodioxine
Highly chemoselective direct reduction of primary, secondary, and tertiary amides to alcohols using SmI2/amine/H2O is reported. The reaction proceeds with C-N bond cleavage in the carbinolamine intermediate, shows excellent functional group tolerance, and delivers the alcohol products in very high yields. The expected C-O cleavage products are not formed under the reaction conditions. The observed reactivity is opposite to the electrophilicity of polar carbonyl groups resulting from the nX ? piC=O (X = O, N) conjugation. Mechanistic studies suggest that coordination of Sm to the carbonyl and then to Lewis basic nitrogen in the tetrahedral intermediate facilitate electron transfer and control the selectivity of the C-N/C-O cleavage. Notably, the method provides direct access to acyl-type radicals from unactivated amides under mild electron transfer conditions.
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