1798-39-6

Upstream product

• 91-55-4 2,3-dimethylindole 
• 75-03-6 ethyl iodide 
• 35246-18-5 3-ethyl-2-methyl-1H-indole 
• 74-88-4 methyl iodide 
• 710325-46-5 3-anilino-3-methyl-pentan-2-one 
• 142-04-1 aniline hydrochloride 
• 62-53-3 aniline 
• 74470-78-3 5-ethyl-5-methyl-4-methylene-3-phenyloxazolidin-2-one 
• 77-75-8 meparfynol 
• 59-88-1 phenylhydrazine hydrochloride 
• 565-61-7 3-methyl-pentan-2-one 
• 80956-52-1 4-ethyl-4-methyl-5-methylene-1,3-dioxolan-2-one 
• 55476-04-5 4,4-Dimethyl-5-methylen-2-oxo-1-phenyl-1,3-oxazolidin 
• 100-63-0 phenylhydrazine 

Relevant academic research and scientific papers

Ring transformations of heterocyclic compounds. XXII [1]. Pyrido[1,2-a]indolium salts from 2-methyl-3H-indoles by pyrylium mediated three carbon annelation

The synthesis of pyrido[1,2-a]indolium perchlorates 8,11 from 2,4,6-triarylpyrylium perchlorates 1 and 2-methyl-3H-indoles 6,9 in the presence of a basic condensing agent (anhydrous sodium acetate, piperidine acetate, triethylamine/acetic acid, triethylamine) in ethanol by a 2,4-[C3+C2N] pyrylium ring transformation is reported. Spectroscopic data of the transformation products and their mode of formation are discussed.

HIGH-CAPACITY OPTICAL STORAGE MEDIA

The invention accordingly relates to an optical recording medium comprising a substrate, a reflecting layer and a recording layer, wherein the recording layer comprises a compound of formula (I) or a mesomeric or tautomeric form thereof, wherein M1 is a metal cation in the oxidation state +3, a hydroxy or halogeno metal group wherein the metal is in the oxidation state +4, or an oxo metal group wherein the metal is in the oxidation state +5; (III) and (IV) are each independently of the other (V), (VI) or (VII); (VIII) is (IX), (X), (XI), (XII), (XIII) or (XIV); (XV) is (XVI) or C2-C8 heteroaryl unsubstituted or mono- or poly-substituted by R10, R11, R12 and/or R13; Q1 is N or CR18 , Q2 is N or CR19 , Q3, Q5 and Q7 are each independently of the other CR 20 R21,O, S or NR22 , Q4 is CR16 or N and Q6 is CR 17or N ; and R2and/or R 6 are O, S or NR 33. Please see the disclosure for the other substituents which are less relevant. The compounds of formula (I) are novel and also claimed, as well as the compound of formula (II), or a mesomer or tautomer thereof, wherein R38 is halogen, CF3, NO2, CN, COR22, COOR23 , SO3R23, NCO or SCN, G1, G 2, M1, R1, R2, R4, R5, R6, R8, R22 and R23are as defined in formula (I), M 2m+ is a cation with m positive charges, and m is an integer 1, 2 or 3. The optical recording media are remarkably suitable for DVD±R (658 nm), especially at high recording speeds.

On the reactivity of some 2-methyleneindolines with β-nitroenamines, α-nitroalkenes, and 1,2-diaza-1,3-butadienes

A study of the behaviour of some electron-rich 2-methyleneindolines (1-3) with different electron-poor reagents (formation of new carbon-carbon and nitrogen-carbon bonds) has furnished interesting results from both synthetic and the mechanistic viewpoints

REGIO- AND CHEMOSELECTIVE ALKYLATION OF 2,3-DIALKYLINDOLES. A CONVENIENT PREPARATION OF 2,3,3-TRIALKYL-3H-INDOLES

Various 3-alkyl-2,3-dimethyl-3H-indoles were prepared by addition of an alkyl iodide to a solution of the lithium salt of 2,3-dimethylindole.In contrast, reaction with ethyl chloroformate or trimethylsilyl chloride afforded the N-substituted indoles exclusively.The reaction failed with cyclohexylcarboxaldehyde.