Reactions of thieno[2,3-с]pyrrolines with dehydrobenzene

[Figure not available: see fulltext.] Thieno[2,3-c]pyrrolines bearing a branched substituent at the nitrogen atom reacted with dehydrobenzene, furnishing thienylaziridines. N-Benzyl-substituted thienopyrroline under the reaction conditions gave a Stevens rearrangement product, 6-benzyl-5-phenylthieno[2,3-c]-pyrroline. © 2018, Springer Science+Business Media, LLC, part of Springer Nature

Interaction of condensed tetrahydropyrido[4,3-d]pyrimidin-4-ones with dehydrobenzene – synthesis of 6-vinylpyrimidinones fused with five-membered heterocycle containing two or three heteroatoms

[Figure not available: see fulltext.] The reaction between dehydrobenzene and tetrahydropyrido[4,3-d]pyrimidin-4-ones condensed with isoxazole, thiazole, thiadiazole, or triazole rings resulted in Hofmann cleavage of the tetrahydropyridine moiety with the formation of 6-vinyl-substituted pyrimidones fused with the corresponding azole rings. © 2018, Springer Science+Business Media, LLC, part of Springer Nature

Comparative evaluation of russian black pied and holstein cattle breeds of foreign breeding

A related Holstein breed has recently been used to improve domestic dairy cattle and create highly productive herds by purchasing semen from breeding bulls, as well as a large number of heifers and calves of foreign breeding. The purpose of the work is a comparative assessment of the productive qualities of Black Pied and Holstein cows of foreign breeding. Purebred Holstein cows differ from animals of Black Pied breed in milk yield per lactation by 1064 kg or 15.2% (P≤0.01, in favor of Holstein cows). In terms of quality indicators of milk, that are the content of fat and protein in milk, the superiority remained with Black Pied cows. The difference was significant at P≤0.05 for fat content in milk and at P≤0.001 for protein content. Both groups of cows exceeded the breed standard for milk yield per lactation, mass fraction of fat and mass fraction of protein in milk. The milk of the Russian Black Pied cattle contains more essential amino acids. The milk of cows of both breeds can be considered complete, since the amount of limited amino acids in the milk of purebred Holstein cows of foreign breeding is over 95% of their content in the ideal protein

Evaluating the growth of replacement heifers from different seed bulls

In the Sverdlovsk region Holsteinized Black Pied cattle of the Ural type are bred which are represented by large, highly productive animals with a high genetic potential for productivity. Great importance is attached to the rearing replacement calves. The aim of the study was to study the dynamics of the live weight of replacement heifers from different seed bulls during rearing and its dependency on the age of the first insemination. The highest average daily weight gains were in the dairy period of heifers development, they ranged from 989 g for the daughters of the bull Thunderline to 1054 g for their peers from the bull Maximum. There were also high average daily gains during this period when rearing heifers from the bull Renigend. In the second period of rearing from 6 to 10 months of age there was a decrease in the average daily weight gain in all groups. Heifers from different seed bulls reach the required live weight for the first insemination at different ages. Maximum’s daughters, which had the weight of 399.4 kg at the age of 12.9 months. reached the required live weight most quickly. Their peers from other seed bulls reached the aforementioned live weight only at the age of 13.7 months

Interaction of condensed tetrahydropyrido[4,3-d]pyrimidin-4-ones with dehydrobenzene – synthesis of 6-vinylpyrimidinones fused with five-membered heterocycle containing two or three heteroatoms

[Figure not available: see fulltext.] The reaction between dehydrobenzene and tetrahydropyrido[4,3-d]pyrimidin-4-ones condensed with isoxazole, thiazole, thiadiazole, or triazole rings resulted in Hofmann cleavage of the tetrahydropyridine moiety with the formation of 6-vinyl-substituted pyrimidones fused with the corresponding azole rings. © 2018, Springer Science+Business Media, LLC, part of Springer Nature

Reaction of benzyne with 1,2,3,4-tetrahydroisoquinolines as an access to 1H-3-benzazepines

1,2,3,4-Tetrahydroisoquinolines bearing phenacyl group at the nitrogen atom in their reaction with benzyne in acetonitrile undergo ring expansion to give 1H-3-benzazepines. © 201

Reactions of thieno[2,3-с]pyrrolines with dehydrobenzene

[Figure not available: see fulltext.] Thieno[2,3-c]pyrrolines bearing a branched substituent at the nitrogen atom reacted with dehydrobenzene, furnishing thienylaziridines. N-Benzyl-substituted thienopyrroline under the reaction conditions gave a Stevens rearrangement product, 6-benzyl-5-phenylthieno[2,3-c]-pyrroline. © 2018, Springer Science+Business Media, LLC, part of Springer Nature

Reaction of benzyne with 1,2,3,4-tetrahydroisoquinolines as an access to 1H-3-benzazepines

1,2,3,4-Tetrahydroisoquinolines bearing phenacyl group at the nitrogen atom in their reaction with benzyne in acetonitrile undergo ring expansion to give 1H-3-benzazepines. © 201