JPS5620583A - Synthesis of 3-alkyl-2-methyldihydro-4h-1,3-thiazinium salt - Google Patents

Synthesis of 3-alkyl-2-methyldihydro-4h-1,3-thiazinium salt

Info

Publication number
JPS5620583A
JPS5620583A JP9507279A JP9507279A JPS5620583A JP S5620583 A JPS5620583 A JP S5620583A JP 9507279 A JP9507279 A JP 9507279A JP 9507279 A JP9507279 A JP 9507279A JP S5620583 A JPS5620583 A JP S5620583A
Authority
JP
Japan
Prior art keywords
compound
formula
thiazinium
alkyl
acidic conditions
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP9507279A
Other languages
Japanese (ja)
Inventor
Mamoru Nakatani
Akira Tanaka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Paper Mills Ltd
Original Assignee
Mitsubishi Paper Mills Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Paper Mills Ltd filed Critical Mitsubishi Paper Mills Ltd
Priority to JP9507279A priority Critical patent/JPS5620583A/en
Publication of JPS5620583A publication Critical patent/JPS5620583A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To obtain the titled compound in high yield, simply by hydrolyzing a compound readily prepared from a compound, e.g. 3-methyl-2-methylthiodihydro- 4H-1,3-thiazinium iodide, and a compound having an active methylene under acidic conditions.
CONSTITUTION: A compound of formula I (R1 is alkyl; R2 and R3 are acyl, alkoxycarbonyl, alkoxyoxalyl, carbamoyl, carboxy, oxalo or cyano group, e.g. 2-(α- acetyl -α- ethoxycarbonylmethylidene )-3-methylperhydro -1, 3- thiazine, is hydrolyzed under acidic conditions to give the objective compound, e.g. 2,3-dimethyldihydro-4H-1,3-thiazinium chloride. The compound of formula I can be obtained by reacting a compound of formula III (X1 - is anion) with a compound of formula IV having an active methylene.
USE: An intermediate for a coloring matter used as a spectrum photosensitizer of a photosensitive material with a silver halide.
COPYRIGHT: (C)1981,JPO&Japio
JP9507279A 1979-07-27 1979-07-27 Synthesis of 3-alkyl-2-methyldihydro-4h-1,3-thiazinium salt Pending JPS5620583A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9507279A JPS5620583A (en) 1979-07-27 1979-07-27 Synthesis of 3-alkyl-2-methyldihydro-4h-1,3-thiazinium salt

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9507279A JPS5620583A (en) 1979-07-27 1979-07-27 Synthesis of 3-alkyl-2-methyldihydro-4h-1,3-thiazinium salt

Publications (1)

Publication Number Publication Date
JPS5620583A true JPS5620583A (en) 1981-02-26

Family

ID=14127776

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9507279A Pending JPS5620583A (en) 1979-07-27 1979-07-27 Synthesis of 3-alkyl-2-methyldihydro-4h-1,3-thiazinium salt

Country Status (1)

Country Link
JP (1) JPS5620583A (en)

Similar Documents

Publication Publication Date Title
JPS568352A (en) Aminoalkylvenzene derivative
JPS5690031A (en) Preparation of aromatic aldehyde
JPS56131565A (en) 4-substituted-2-oxoazetidine compound and its preparation
JPS5620583A (en) Synthesis of 3-alkyl-2-methyldihydro-4h-1,3-thiazinium salt
JPS57192392A (en) Production of 3-alkoxymethylcephalosporin
JPS57183768A (en) 4-methyl-5-(o-carboxyphenyl)carbamoylthiazole derivative and its preparation
JPS56138177A (en) Preparation of 5-acyloxymethylfurfural
JPS57139065A (en) Preparation of omega-indole-3-ylalkanole compound
JPS5551079A (en) Preparation of benzoxazole derivative
JPS57163367A (en) Isocarbostyryl derivative
JPS5764639A (en) Novel stilbene derivative, its preparation, and medical composition containing the same as active ingredent
JPS5612361A (en) Isopropylamine derivative and its preparation
JPS5432480A (en) Novel preparation of piperidine derivatives
JPS5759896A (en) Production of thiazolineazetidinone derivative
JPS5785351A (en) Preparation of amidinecarboxylic acid
JPS5629542A (en) Preparation of phenylacetic acid derivative
JPS5551069A (en) Preparation of benzimidazole derivative
JPS54115373A (en) Preparation of heterocyclic compound
JPS5547651A (en) Production of sulfoxyimine
JPS5473797A (en) Pyride 3.2.1-jk carbazole derivative
JPS5681581A (en) Preparation of antispasmodic agent
JPS5545608A (en) Preparation of organosilver compound
JPS55127366A (en) Preparation of 4-(3-isopropylamino-2-hydroxypropoxy)-indole
JPS55122746A (en) Preparation of glycine derivative
JPS5758640A (en) Hydroxycyclopentenone and its preparation