2.1.5. Electrophilic Attack on CdC 3994 2.1.6. NH Insertions in Diazo Compounds 3994 2.1.7. Pd Catalyzed Cyclizations 3994 2.2. Cyclizations by C-C Bond formation 3995 2.2.1. Nucleophilic Displacement of Halides 3995 2.2.2. Cyclizations Involving CdO Group 3995 2.3. Cycloadditions 3996 2.4. Ring Rearrangements 3997 2.4.1. Rearrangements of Four-Membered Rings 3997 2.4.2. Rearrangements of Larger Rings 3998 2.5. Reduction of Azetidin-2-ones 3998 2.6. Miscellaneous Syntheses 3999 2.7. Important Classes of Compounds 4000 2.7.1. Natural Products 4000 2.7.2. Azetidine Carboxylic Acids 4001 2.7.3. Exomethylene Azetidines 4002 2.7.4. Ligands for Metal-Catalyzed Reactions and Chiral Auxiliaries 4003

Novel syntheses of azetidines and azetidinones.

Four-membered ring-containing spirocycles: synthetic strategies and opportunities.

6. C-Sulfur-Substituted Aziridines 2110 6.

Synthesis and reactivity of C-heteroatom-substituted aziridines.

Cyclopropane amino acids: 2,3- and 3,4-Methanoamino acids

The invention relates to new compounds of the formula (I) in which W, X, Y, Z and CKE have the meanings given above, to a plurality of processes and intermediates for their preparation and to their use as pesticides and/or herbicides, and also to selective herbicidal compositions comprising, firstly, the compounds of the formula (I) and, secondly, at least one crop plant compatibility enhancer compound. The invention relates further to boosting the activity of crop protection compositions comprising compounds of the formula (I) by adding ammonium salts or phosphonium salts and, if appropriate, penetrants.

Biphenyl-substituted spirocyclic ketoenols

Synthesis of azetidines from β-chloro imines

2,2-Dialkyl-1-aminocyclopropanecarboxylic acids, abbreviated as 2,2-dialkyl Acc's, are potential plant growth regulators which were synthesized by ring closure of α-chloro imines. The synthetic scheme leading to these Acc analogues entails a newly developed regiospecific synthesis of tertiary α-chloro ketimines, the trapping with cyanide of a transient Favorskii derived cyclopropylideneamine, and the hydrolytic conversion of 1-(N-tert-butylamino)-2,2-dialkylcyclopropanecarbonitriles into the title compounds

Synthesis of 2,2-dialkyl-1-aminocyclopropanecarboxylic acids from .alpha.-chloro ketimines

Formation of α-cyanoaziridines and 1-(alkylamino) cyclopropanecarbonitriles by cyanation of α-halo ketimines

La transposition, catalysee par les bases, des α-chlorocetimines, conduit a des imidates ou a des amides suivant un mecanisme mettant en jeu une dechlorhydratation-1,3 et une decyclisation des cyclopropylideneamines resultants

The Favorskii rearrangement of .alpha.-chloro ketimines

Chemistry of .alpha.-halogenated imines. Part 31. Formation of .alpha.-cyanoaziridines and 1-(alkylamino)cyclopropanecarbonitriles by cyanation of .alpha.-halo ketimines

Paul Sulmon

Papers

Synthesis of azetidines from β-chloro imines

Synthesis of 2,2-dialkyl-1-aminocyclopropanecarboxylic acids from .alpha.-chloro ketimines

Formation of α-cyanoaziridines and 1-(alkylamino) cyclopropanecarbonitriles by cyanation of α-halo ketimines

The Favorskii rearrangement of .alpha.-chloro ketimines

Chemistry of .alpha.-halogenated imines. Part 31. Formation of .alpha.-cyanoaziridines and 1-(alkylamino)cyclopropanecarbonitriles by cyanation of .alpha.-halo ketimines