Carbonylation

Colquhoun, Howard M.; Thompson, D. J.; Twigg, M. V.

doi:10.1007/978-1-4757-9576-9

Cited by 236 publications

(13 citation statements)

References 232 publications

(297 reference statements)

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“…7,9 Virtually all types of functionality seems to be tolerated, and the synthesis can usually be performed in a one-pot procedure. One limitation is encountered with organohalides having -protons bound to sp 3 carbons; these usually give low yields due to the competing -hydride elimination reaction.…”

Section: Introductionmentioning

confidence: 99%

Biologically Active ¹¹C-Labeled Amides Using Palladium-Mediated Reactions with Aryl Halides and [¹¹C]Carbon Monoxide

1999

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Using [11C]carbon monoxide in palladium-mediated synthesis, six amides were labeled with 11C. Phenyl and benzyl halides with halides as additional substituents were carbonylated and reacted with primary and secondary amines. Four of the selected amides were receptor ligands, one was a precursor to a receptor ligand, and one was a model compound. The 11C-labeled amides were obtained with good to almost quantitative radiochemical yields with specific activities up to 1000 GBq/μmol. The radiochemical purity of the final products exceeded 98%. In one case, the corresponding 13C-substituted compound was produced to verify the position of the label. In a typical experiment starting with 5.0 GBq of [11C]carbon monoxide, 2.2 GBq of LC-purified N-(2-aminoethyl)-4-chloro[carbonyl-11C]benzamide was obtained within 15 min from the start of the carbonylation reaction (74% decay-corrected radiochemical yield). The presented approach gives significant new possibilities for 11C-labeling and is seen to be valuable also for synthesis of 13C- and 14C-substituted compounds.

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Section: Introductionmentioning

confidence: 99%

Biologically Active ¹¹C-Labeled Amides Using Palladium-Mediated Reactions with Aryl Halides and [¹¹C]Carbon Monoxide

1999

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“…Bağlamsalcı eleştirinin birinci modelinin sanat ve modernist sanatta kompozisyon anlayışı ve sanat alanındaki "biçimci" geleneklerle ilişkisi vardır. Alan Colquhoun, 19 kompozisyon kelimesinin temel kaynaklarından birinin müzik alanı olduğunu belirtir. Müzik alanında yaratıcılık, sanatçının bir parçayı oluşturmak için, bir dış referans olmaksızın, elindeki malzemeyi "çalışmasının içinden kaynaklanan kanunlara göre bir araya getirdiği" ve deyim yerindeyse "yoktan" var ettiği bir süreç olarak düşünülür.…”

Section: Bağlamsalcılığın İki Yüzü: Mimari Bağlamsalcılıkta Geniş Birunclassified

“…Müzik alanında yaratıcılık, sanatçının bir parçayı oluşturmak için, bir dış referans olmaksızın, elindeki malzemeyi "çalışmasının içinden kaynaklanan kanunlara göre bir araya getirdiği" ve deyim yerindeyse "yoktan" var ettiği bir süreç olarak düşünülür. 20 Bu anlayışa göre sonuç ürün, onu oluşturan ögelerin bir iç düzence bir araya getirildiği çözünemez bir bütündür. Modern sanatın müzik alanındaki kompozisyon anlayışına ilgisi, geleneksel imitasyon kuramına referansla, resim ve heykel gibi "imitasyonla kirlenmiş," alanlardan bakıldığında müziği "en az kirlemiş," yani başka bir deyişle kendine dışsal herhangi bir şeye ihtiyacı olmadan kendi bütünselliğinde ayakta durabilen ve bu haliyle de sanat eseri niteliğini taşıyabilen bir şekilde görmesidir.…”

Section: Bağlamsalcılığın İki Yüzü: Mimari Bağlamsalcılıkta Geniş Birunclassified

Two Faces of Contextualism: a Review of of Contextualism in a World with Chamfered Peaks and Valleys

Özten¹

2017

Megaron

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Ülkü ÖZTEN, Hakan ANAYBu çalışma genel bir bakışla, mimarlık alanında bağlamsalcılık olarak nitelendirilen bir yaklaşımlar bütünüyle ilişkilidir. Çalışma çıkış noktası olan bağlam ve bağlamsalcılığı Colin Rowe ve Fred Koetter'ce Collage City'de tariflendiği ve özellikle 1960'lardan 1980'lerdeki dönü-şümüne kadarki kavramsallaştırmalarıyla alır. Çalışmanın ana amacı bağlamsalcılığın sanat alanında "bağlamsalcılık, " "bağlamsalcı eleştiri, " "estetik bağlamsalcılık" gibi isimlerle anılan, iki ayrı çerçeveye referanslı yeni bir okumasını yapmaktır. Çalışmada, mimari bağlamsalcılık tarihsel perspektifte kısaca gözden geçirilmiştir. Bunu takiben bağlam ve bağlamsalcılık düşünceleri, amaçlanan yeni okumaya bir çerçeve oluşturacak şekilde, yukarıda sözü edilen iki farklı ancak ilişkili temel entelektüel çerçeve temelinde incelenmiştir. Oluşturulan çerçeve bağlamında, bağlamsalcılığın hedeflediği ana sorunlardan hareketle temel kavramları yeniden yorumlanmıştır. Bu yorumlamanın bağ-lamsalcılığın kapsayıcı, genişletilmiş bir yeniden-okuması olduğu, bağlamsalcılığın sınırlı, indirgemeci ve yüzeysel yorumlarının ötesinde mimarlığa ve mimari tasarıma dair bir kapsayıcı dünya görüşü, bir kavrayış ve uygulamaya yönelik bir model sunduğu düşünülmektedir. "Contextualism," "contextualist(ic) criticism" and "aesthetical contextualism." The present study is concerned with a body of studies in architecture called Contextualism. As its departure point, the study takes context and Contextualism as these concepts were defined in Collage City and in their conceptualizations between 1960s and 1980s before their transformation. The main aim of the study is to create a survey of Contextualism with reference to two distinct frameworks from the field of art, often referred to as

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“…A number of examples of carbonylation reactions of unsatured alcohols and amines for the formation of lactones and lactams, which have found applications in pharmacological and commercial field, are reported in the literature. 1,2 In 1996, one of us described the regioselective cyclocarbonylation of 2-allylphenol derivatives, using palladium acetate [Pd(OAc) 2 ] and 1,4-bis(diphenylphosphino)butane (dppb) as a homogeneous catalytic system, for the synthesis of five-, six-or seven-membered ring lactones, and it was found that the selectivity of the process was dependent on the solvent and CO/H 2 ratio. 3 More recently, the previously mentioned catalytic system has been validated for the synthesis of a large variety of molecules, such as bis-lactones and estrone derivatives.…”

Section: Introductionmentioning

confidence: 99%

Cyclocarbonylation reactions of allylphenols and allylnaphthols catalyzed by Pd/C– 1,4‐bis(diphenylphosphine)butane

Maffei¹,

Mele²,

Ciccarella³

et al. 2002

Applied Organom Chemis

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Palladium/activated carbon (Pd/C) in the presence of 1,4-bis(diphenylphosphino)butane is an efficient heterogeneous catalyst for cyclocarbonylation reactions of 2-allyl phenols affording five-, six-, and seven-membered ring lactones. Various examples of cyclocarbonylation are reported and the regioselectivity is compared with the homogeneous system. Both commercial Pd/C and Pd/C prepared from activated carbons obtained from vegetable and polymeric wastes are investigated.

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Carbonylation

Cited by 236 publications

References 232 publications

Biologically Active ¹¹C-Labeled Amides Using Palladium-Mediated Reactions with Aryl Halides and [¹¹C]Carbon Monoxide

Biologically Active ¹¹C-Labeled Amides Using Palladium-Mediated Reactions with Aryl Halides and [¹¹C]Carbon Monoxide

Two Faces of Contextualism: a Review of of Contextualism in a World with Chamfered Peaks and Valleys

Cyclocarbonylation reactions of allylphenols and allylnaphthols catalyzed by Pd/C– 1,4‐bis(diphenylphosphine)butane

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Carbonylation

Cited by 236 publications

References 232 publications

Biologically Active 11C-Labeled Amides Using Palladium-Mediated Reactions with Aryl Halides and [11C]Carbon Monoxide

Biologically Active 11C-Labeled Amides Using Palladium-Mediated Reactions with Aryl Halides and [11C]Carbon Monoxide

Two Faces of Contextualism: a Review of of Contextualism in a World with Chamfered Peaks and Valleys

Cyclocarbonylation reactions of allylphenols and allylnaphthols catalyzed by Pd/C– 1,4‐bis(diphenylphosphine)butane

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Biologically Active ¹¹C-Labeled Amides Using Palladium-Mediated Reactions with Aryl Halides and [¹¹C]Carbon Monoxide

Biologically Active ¹¹C-Labeled Amides Using Palladium-Mediated Reactions with Aryl Halides and [¹¹C]Carbon Monoxide