Regio- and Stereoselective Conversion of Terminal Alkylselenoacetylenes into (E)-2-Alkylseleno-1-Vinylic Iodides via Hydroboration-Iodination
摘要:
The hydroboration of terminal alkylselenoacetylenes 1 in the presence of 3 mol% of Pd (PPh(3))(4) with catecholborane 2 followed by hydrolysis, undergo a rapid reaction with iodine under the influence of sodium hydroxide at-10 degrees C in THF to afford a novel method for the regio-and stereospecific synthesis of (E)-2-alkylseleno-1-vinyl iodides 4.