Title:
【発明の名称】4ーホルミルテトラヒドロピランの製法
Document Type and Number:
Japanese Patent JP2556524
Kind Code:
B2
Abstract:
4-Formyltetrahydropyrans of the general formula I (I) where R1 is hydrogen, C1-C12-alkyl, C2-C12-alkenyl, C1-C6-alkoxy-substituted C1-C12-alkyl, C4-C12-cycloalkyl, unsubstituted or substituted aryl, hetaryl or aralkyl, or an unsubstituted or substituted, saturated or unsaturated 5-membered or 6-membered ring which may be interrupted by N, O or S, are prepared by a process in which a pyran derivative of the general formula II (II) where R1 is as defined above, R2 and R3 are each OH or together are an oxygen atom and thus form an oxirane ring, and R4 is hydrogen where R2 and R3 are each OH, and is hydrogen or tert-butoxycarbonyl where R2 and R3 together are an oxygen atom, is treated at elevated temperatures with a catalyst selected from the group consisting of zeolites, phosphates, boric acid on a carrier and silica or mixtures of these. Novel 4-formyltetrahydropyrans are also proposed.
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Inventors:
UORUFUGANGU SHUPIIGURAA
UORUFUGANGU HERUDERITSUHI
NORUBERUTO GEETSU
REOHORUDO FUPUFUAA
YOOHEN UIRUTO
UORUFUGANGU HERUDERITSUHI
NORUBERUTO GEETSU
REOHORUDO FUPUFUAA
YOOHEN UIRUTO
Application Number:
JP21655987A
Publication Date:
November 20, 1996
Filing Date:
September 01, 1987
Export Citation:
Assignee:
BASF AG
International Classes:
A01N43/18; B01J29/40; B01J29/70; B01J29/83; B01J29/85; B01J29/86; C07D309/04; C07D309/06; C07D309/10; C07D405/04; C07D407/04; C07D409/04; C07D411/04; (IPC1-7): C07D309/06; B01J29/40; B01J29/70; B01J29/83; B01J29/85; B01J29/86; C07D407/04
Domestic Patent References:
| JP63057582A |
Attorney, Agent or Firm:
Toshio Yano (2 outside)