Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Preparation and derivatization of the bromo regioisomers 27 and 28.
Reagents and conditions. a. diethyl oxalate, reflux; b. SOCl2, DMF cat.; c. Malononitrile, NaH, DME; d. 92, NMP; e. H2SO4; f. BBr3, CH2Cl2; g. RB(OR)2, Pd(dppf)Cl2.CH2Cl2, K2CO3, DMF or CuCN, DMF.
