Synthesis and Chemical Reactions of New Phosphono-phosphino Substituted g-Thiapyrones

Neidlein, R.; Hahn, Dirk Uwe; Kramer, Walter; Krieger, Claus

doi:10.3987/com-97-s(n)9

Cited by 10 publications

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“…117 A broader study was reported by Neidlein and co-workers using the phosphonates and phosphinates 265 (Scheme 127). 118 Reaction of the phosphonate 265 (R = R 1 = OEt) with other active methylene compounds was then reported by Abdou. 119 For example, with 1,3-indanedione and sodium ethoxide as base, indanone 266 was isolated in 74% yield (Scheme 128).…”

Section: Scheme 126mentioning

confidence: 95%

Synthesis and Reactions of 2-Alkylidene Thiiranes and Thietanes

Richardson¹,

Howell²

2007

Synthesis

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This review covers the synthesis and applications of three-and four-membered sulfur-containing rings with adjacent exocyclic unsaturation. Alkylidene thiiranes have been of largely theoretical interest with few applications. Conversely, alkylidene thietanes and dithietanes have been used as intermediates for the synthesis of a number of heterocyclic ring systems. Publications related to both systems peaked a number of years ago, but it is hoped that this review will stimulate interest and lead to new research in these areas.

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Section: Scheme 126mentioning

confidence: 95%

Synthesis and Reactions of 2-Alkylidene Thiiranes and Thietanes

Richardson¹,

Howell²

2007

Synthesis

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“…In this case, according to the Peseke [9] and Neidlein [10][11][12] mechanisms (Scheme 1), the first formed addition product 5 and/or 6 is either stable or undergoes further transformations. Indeed, adducts from hydrazones and 1 fall within this latter group and the mode of transformation depends on the nature of the substrates.…”

Section: Introductionmentioning

confidence: 99%

General approach for regioselective synthesis of fused phosphono substituted-oxadiazines

Abdou

Ganoub

2000

Heteroatom Chem.

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A series of fused 1,3,4‐oxadiazines were regioselectively prepared in reasonable yields as major products from the reactions of the corresponding α‐carbonyl hydrazones with tetraethyl 1,3‐dithietane‐2,4‐diylidene‐bis(cyanomethylphosphonate) (1). Side products were also observed wherein the dimeric products 8 or 17 and/or different types of N‐heterocycles such as pyrazole 24 or pyridazines 28 or 29 were isolated and identified. A comparative study on the chemistry of 1 toward α‐aminonitrile 30 is also described. © 2000 John Wiley & Sons, Inc. Heteroatom Chem 11:196–204, 2000

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ChemInform Abstract: Synthesis and Chemical Reactions of New Phosphono‐Phosphino Substituted γ‐Thiapyrones.

et al. 1998

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Synthesis and Chemical Reactions of New Phosphono-PhosphinoSubstituted γ-Thiapyrones.-The 1,3-dithietane-2,4-diylidenes (I) react with acylated acetonitriles to form γ-thiapyrones (III). Standard Boc-protection of (III) results in the reaction at the primary amino group and oxidative desulfurization leads to the γ-pyrones (VI). -(NEIDLEIN, R.; HAHN, D. U.; KRAMER, W.; KRIEGER, C.; Heterocycles 47 (1998) 1, 221-262; Pharm.-Chem. Inst., Ruprecht-Karls-Univ., D-69120 Heidelberg, Germany; EN)

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Synthesis and Chemical Reactions of New Phosphono-phosphino Substituted g-Thiapyrones

Cited by 10 publications

References 0 publications

Synthesis and Reactions of 2-Alkylidene Thiiranes and Thietanes

Synthesis and Reactions of 2-Alkylidene Thiiranes and Thietanes

General approach for regioselective synthesis of fused phosphono substituted-oxadiazines

ChemInform Abstract: Synthesis and Chemical Reactions of New Phosphono‐Phosphino Substituted γ‐Thiapyrones.

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