35770-52-6

Upstream product

• 75-97-8 3,3-dimethyl-butan-2-one 
• 122-51-0 orthoformic acid triethyl ester 

Downstream Products

• 104825-14-1 2-(2,6-Di-tert-butyl-pyran-4-ylidene)-3-(4-nitro-phenyl)-5-phenyl-2,3-dihydro-[1,3,4]thiadiazole 
• 104825-15-2 2-(2,6-Di-tert-butyl-pyran-4-ylidene)-5-(4-methoxy-phenyl)-3-(4-nitro-phenyl)-2,3-dihydro-[1,3,4]thiadiazole 
• 104825-06-1 2,6-Di-tert-butyl-4-(4,5-diphenyl-[1,3]dithiol-2-ylidene)-4H-pyran 
• 104825-07-2 2,6-Di-tert-butyl-4-(4-phenyl-[1,3]dithiol-2-ylidene)-4H-pyran 
• 129806-47-9 2,6-Di-tert-butyl-4-(diphenyl-phosphinoyl)-4H-pyran 
• 104086-25-1 2,6-Di-tert-butyl-2-methoxy-2H-pyran 
• 104086-47-7 2,6-Di-tert-butyl-4-methoxy-4H-pyran 
• 89560-42-9 2,7-Di-tert-butyl-4--5-methyloxepin 
• 89540-12-5 2,7-Di-tert-butyl-4-(diphenylphosphoryl)-5-methyloxepin 
• 89540-08-9 2,6-Di-tert-butyl-4--4-methyl-4H-pyran 
• 89540-09-0 2,6-Di-tert-butyl-4--4-methyl-4H-pyran 
• 78320-55-5 bis(1,3-dipyvaloyl-π-allyl)trispalladium(II) μ-tetrabenzoate 
• 91236-75-8 2,6-Di-tert-butyl-4--4H-pyran 
• 63960-06-5 2,6-Di-tert-butyl-4-methyl-4H-pyran 

Relevant academic research and scientific papers

One-Pot Synthesis of 2,6-Di-t-butyl- and 2,6-Diarylthiopyrylium Perchlorates

The title compounds were prepared by reaction of the corresponding methyl ketone with an excess of triethyl orthoformate in an acidic medium (acetic anhydride/perchloric acid) under a hydrogen sulfide stream.

Investigations on Diazo Compounds and Azides, XLIV. 4-Diazomethyl-4H-pyrans by Electrophilic Diazoalkane Substitution

Electrophilic diazoalkane substitution of the (diazomethyl)phosphoryl compounds 3a-e with the pyrylium tetrafluoroborate 2 yields the 4--4H-pyrans 4a-e.Corresponding reactions of the pyrylium perchlorates 1a-j with 3a lead - accor