A process for conveniently and efficiently preparing a 2,6-halogenopurine using an inexpensive starting material. A process for preparing a 2,6-dihalogenopurine, comprising treating a 2-amino-6-halogenopurine having a protective group at 7th position or 9th position with a diazotizating agent and a halogen source; and a process for preparing a 9-acyl-2-amino-6-halogenopurine, comprising treating a 2-amino-6-halogenopurine with an acylating agent in the presence of a base.
一种方便高效地制备2,6-卤代
嘌呤的方法,使用一种廉价的起始物质。一种制备2,6-二卤代
嘌呤的方法,包括将7位或9位上带有保护基团的2-
氨基-6-卤代
嘌呤与重氮化试剂和卤素源处理;以及一种制备9-酰基-2-
氨基-6-卤代
嘌呤的方法,包括在碱的存在下用酰化试剂处理2-
氨基-6-卤代
嘌呤。