Alkene Isomerization Catalyzed by a Mn(I) Bisphosphine Borohydride Complex.

An additive-free manganese-catalyzed isomerization of terminal alkenes to internal alkenes is described. This reaction is implementing an inexpensive nonprecious metal catalyst. The most efficient catalyst is the borohydride complex -[Mn(dippe)(CO)(κ-BH)].

Manganese catalysed reduction of nitriles with amine boranes.

The room temperature reduction of various nitriles using amine boranes (ABs) catalysed by a manganese(i) alkyl complex is described. Based on experimental findings, a plausible mechanistic scenario is presented. This includes the presence of two catalytic cycles, one for productive reduction of nitriles and one for hydrogen evolution.

Base- and Additive-Free Carbon Dioxide Hydroboration to Methoxyboranes Catalyzed by Non-Pincer-Type Mn(I) Complexes.

Well-defined, bench stable Mn(I) non-pincer-type complexes were tested as earth-abundant transition metal catalysts for the selective reduction of CO to boryl-protected MeOH in the presence of pinacolborane (HBpin). Essentially, quantitative yields were obtained under mild reaction conditions (1 bar CO, 60 °C), without the need of any base or additives, in the presence of the alkylcarbonyl Mn(I) bis(phosphine) complexes -[Mn(CHCHCH)(dippe)(CO)] [, dippe = 1,2-bis(diisopropylphosphino)ethane] and [Mn(dippe)(CO){(μ-H)(Bpin)}] (), that is obtained by reaction of the bench-stable precatalyst with HBpin via elimination of butanal. Preliminary mechanistic details were obtained by a combination of NMR experiments and monitoring of the catalytic reactions.

Laparoscopic pyelolithotomy in pelvic ectopic kidney: Case report and literature review.

Introduction: Pelvic kidney is a rare congenital anomaly. The ectopic kidney is more susceptible to developing lithiasis. The management of this type of lithiasis is a challenge.

Bladder Dysfunction in an Obese Zucker Rat: The Role of TRPA1 Channels, Oxidative Stress, and Hydrogen Sulfide.

Purpose: This study investigates whether functionality and/or expression changes of transient receptor potential vanilloid 1 (TRPV1) and transient receptor potential ankyrin 1 (TRPA1) channels, oxidative stress, and hydrogen sulfide (HS) are involved in the bladder dysfunction from an insulin-resistant obese Zucker rat (OZR).

Materials And Methods: Detrusor smooth muscle (DSM) samples from the OZR and their respective controls, a lean Zucker rat (LZR), were processed for immunohistochemistry for studying the expression of TRPA1 and TRPV1 and the HS synthase cystathionine beta-synthase (CBS) and cysthathionine--lyase (CSE). Isometric force recordings to assess the effects of TRPA1 agonists and antagonists on DSM contractility and measurement of oxidative stress and HS production were also performed.