Tetrel bond: dipyridyl methylene as a donor site
نویسندگان
چکیده
منابع مشابه
A lithiomethyl trimethylammonium reagent as a methylene donor.
Straightforward deprotonation of soluble tetramethylammonium salts with alkyllithium reagents gives lithiomethyl trimethylammonium reagents. Coordination of the Li cation is crucial to the stability of these 'N-C ylides'. These reagents were used to prepare epoxides, aziridines and allylic alcohols.
متن کاملScalp as a donor site for split thickness skin grafts.
BACKGROUND Use of scalp as a donor site was reported for the first time in 1964. Since then, authors have described scalp as a donor site, which heals rapidly and re-growth of hair conceals the donor site. This study was aimed at evaluation of scalp as donor site by calculating the healing time, and frequency of post-operative complications. METHODS This was a descriptive study and was conduc...
متن کاملFlap Donor Site Size Reduction with Substratum Horizontal Mattress Suture
Closure of donor site of the flap has special problems. Reduction of this site will decrease the morbidity of operation. In this study, we present our experience in donor site size reduction. METHODS Between 2006 and 2008, 15 patients with skin and soft tissue defects underwent operation. In all patients, coverage of defect was performed with various flaps. Substratum horizontal mat-tress sut...
متن کاملDonor site repair.
Delayed healing of skin donor sites may be costly and life threatening, especially in patients with large body-surface area burns. A donor site dressing should maximize the ability of the wound to heal without increasing the risk of local infection, systemic infection, or both. Specifically, the possibility of a secondary infection may either slow the healing process or ultimately convert the d...
متن کاملCyclopropanation of styrenes and stilbenes using lithiomethyl trimethylammonium triflate as methylene donor.
Lithiomethyl trimethylammonium triflate, prepared from tetramethylammonium triflate, cyclopropanates several styrenes and stilbenes with electron-donating and selected electron-withdrawing substituents efficiently. Kinetic data support a stepwise nucleophilic addition-ring closure mechanism for this methylenation.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Acta Crystallographica
سال: 2021
ISSN: ['2053-2733']
DOI: https://doi.org/10.1107/s0108767321088930