申请人:Kawanami Hirotaka
公开号:US20120046476A1
公开(公告)日:2012-02-23
Disclosed is a method for producing a tetrahydropyran compound represented by general formula (5) shown in the scheme. Accordingly, a tetrahydropyran derivative is obtained in high yield and with high selectivity without using a highly toxic reagent, and an industrially useful method for producing a tetrahydropyran derivative and an intermediate thereof can be provided. In formulae (1) to (5), R
1
and R
2
each independently represent a hydrogen atom, a linear, branched, or cyclic alkyl group, or an aromatic group which may have a substituent, and R
1
and R
2
may be combined to form an alkylene group, thereby forming a ring; and R
3
and R
4
each independently represent a hydrogen atom or a linear, branched, or cyclic alkyl group, and R
3
and R
4
may be combined to form an alkylene group, thereby forming a ring.
本公开了一种用于制备在方案中所示的通式(5)所代表的四氢吡喃化合物的方法。因此,可以在不使用高毒性试剂的情况下,高产率和高选择性地获得四氢吡喃衍生物,并且可以提供一种工业上有用的制备四氢吡喃衍生物及其中间体的方法。在通式(1)至(5)中,R1和R2分别独立表示氢原子、直链、支链或环烷基基团,或者可能具有取代基的芳香基团,R1和R2可以结合形成亚烷基基团,从而形成环;R3和R4分别独立表示氢原子或直链、支链或环烷基基团,R3和R4可以结合形成亚烷基基团,从而形成环。