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211509-06-7

1-Benzyl-3-tert-butyl-1H-isotellurochromene is a tellurium-containing heterocyclic compound derived from the reaction of 2-benzotelluropyrylium salts with nucleophiles, such as Grignard reagents. It can be further transformed into 1,3-disubstituted 2-benzopyrylium salts under certain conditions and may exist in equilibrium with its (Z)-benzylidene form in solution. 1-benzyl-3-tert-butyl-1H-isotellurochromene is part of a broader class of isotellurochromenes, which are of interest due to their reactivity and potential applications in synthetic chemistry. **Return:** 1-Benzyl-3-tert-butyl-1H-isotellurochromene is a tellurium-based heterocycle formed from 2-benzotelluropyrylium salts via nucleophilic addition, capable of further conversion into disubstituted pyrylium derivatives and existing in equilibrium with a (Z)-benzylidene form in solution.

211509-06-7

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211509-06-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 211509-06-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,1,5,0 and 9 respectively; the second part has 2 digits, 0 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 211509-06:
(8*2)+(7*1)+(6*1)+(5*5)+(4*0)+(3*9)+(2*0)+(1*6)=87
87 % 10 = 7
So 211509-06-7 is a valid CAS Registry Number.

211509-06-7Downstream Products

211509-06-7Relevant articles and documents

Studies on tellurium-containing heterocycles. Part 10. 2-benzotelluropyrylium salts: First preparation and reactions with Grignard reagents

Sashida, Haruki,Ohyanagi, Kazuo

, p. 2123 - 2124 (1998)

The first simple preparation of 2-benzotelluropyrylium salts 4 from o-ethynylbenzyl bromides 1 in two steps, and the characteristic reaction of these salts 4 with benzylmagnesium bromide and other Grignard reagents are described.

Studies on tellurium-containing heterocycles. Part 20. Reactions of 2-benzoselenopyrylium salts and 2-benzotelluropyrylium salts with nucleophiles: Formation of 1-functionalized 1H-isoselenochromenes and 1H-isotellurochromenes

Sashida, Haruki,Ohyanagi, Kazuo

, p. 57 - 62 (2004)

The reactions of the 2-benzoselenopyrylium (1A) and 2-benzotelluropyrylium cations (1B) with a variety of nucleophiles have been investigated. LiAlH 4, sodium alkoxide (NaOMe, NaOi-Pr and NaOt-Bu), diethylamine, n-butylamine and acetone reacted with 1 to give the 1H-isochromenes (2) and the corresponding 1-substituted products (4-9) under mild conditions in almost good to high yields. The 1-alkyl(phenyl)isoselenochromenes (10-13) and 1-benzylisochromenes (18A, 18B), which were produced by the reaction of the salts 1 with Grignard reagents, were converted to the corresponding 1,3-disubstituted 2-benzopyrylium salts (14-17, 19) by treatment with triphenylcarbenium tetrafluoroborate (Ph3C+ BF4 -), respectively. The 1-benzylselenopyrylium salts (19A) and 1-benzyltelluropyrylium salts (19B) exist in the solvent as an equilibrium mixture of the salts (19) and the corresponding (Z)-benzylidene compounds (20).

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