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Các bài báo tiêu biểu
Các Mô Hình Liên Kết Hydro: Chức Năng và Phân Tích Tập Hợp Đồ thị Trong Tinh Thể Dịch bởi AI
Tập 34 Số 15 - Trang 1555-1573 - 1995
Tóm tắtTrong khi phần lớn hóa học hữu cơ truyền thống tập trung vào việc chuẩn
bị và nghiên cứu tính chất của các phân tử đơn lẻ, một phần ngày càng quan trọng
của hoạt động nghiên cứu hóa học hiện nay liên quan đến việc hiểu và sử dụng bản
chất của tương tác giữa các phân tử. Hai lĩnh vực tiêu biểu của sự phát triển
này là hóa học siêu phân tử và nhận dạng phân tử. Các tương tác giữa các phân tử
...
#hóa học siêu phân tử #nhận dạng phân tử #lực liên phân tử #liên kết hydro #lý thuyết đồ thị #tinh thể phân tử
Supramolecular Synthons in Crystal Engineering—A New Organic Synthesis
Tập 34 Số 21 - Trang 2311-2327 - 1995
AbstractA crystal of an organic compound is the ultimate supermolecule, and its
assembly, governed by chemical and geometrical factors, from individual
molecules is the perfect example of solid‐state molecular recognition. Implicit
in the supramolecular description of a crystal structure is the fact that
molecules in a crystal are held together by noncovalent interactions. The need
for rational ap...
Polyoxometalate Chemistry: An Old Field with New Dimensions in Several Disciplines
Tập 30 Số 1 - Trang 34-48 - 1991
AbstractInorganic metal–oxygen cluster anions form a class of compounds that is
unique in its topological and electronic versatility and is important in several
disciplines. Names such as Berzelius, Werner, and Pauling appear in the early
literature of the field. These clusters (so‐called isopoly‐ and
heteropolyanions) contain highly symmetrical core assemblies of MOx units (M =
V, Mo, W) and ofte...
The Palladium‐Catalyzed Cross‐Coupling Reactions of Organotin Reagents with Organic Electrophiles [New Synthetic Methods (58)]
Tập 25 Số 6 - Trang 508-524 - 1986
AbstractThe cross‐coupling of organotin reagents with a variety of organic
electrophiles, catalyzed by palladium, provides a novel method for generating a
carbon‐carbon bond. Because this mild, versatile reaction is tolerant of a wide
variety of functional groups on either coupling partner, is stereospecific and
regioselective, and gives high yields of product, it is ideal for use in the
synthesis...
Starburst Dendrimers: Molecular‐Level Control of Size, Shape, Surface Chemistry, Topology, and Flexibility from Atoms to Macroscopic Matter
Tập 29 Số 2 - Trang 138-175 - 1990
AbstractStarburst dendrimers are three‐dimensional, highly ordered oligomeric
and polymeric compounds formed by reiterative reaction sequences starting from
smaller molecules—“initiator cores” such as ammonia or pentaerythritol.
Protecting group strategies are crucial in these syntheses, which proceed via
discrete “Aufbau” stages referred to as generations. Critical molecular design
parameters (CM...
Molecular Imprinting in Cross‐Linked Materials with the Aid of Molecular Templates— A Way towards Artificial Antibodies
Tập 34 Số 17 - Trang 1812-1832 - 1995
AbstractCan binding sites be produced in organic or inorganic polymers—similar
to those in antibodies—which are able to recognize molecules and which may have
catalytic action? In this article we review a method, analogous to a mechanism
of antibody formation proposed earlier, by which in the presence of interacting
monomers a cross‐linked polymer is formed around a molecule that acts as a
templat...
Simple Method for the Esterification of Carboxylic Acids
Tập 17 Số 7 - Trang 522-524 - 1978
Addition of 4‐dimethylaminopyridine (DMAP) accelerates the
dicyclohexylcarbo‐diimide (DCC)‐activated esterification of carboxylic acids to
such an extent that side reactions are eliminated and even sensitive acids such
2,5‐cyclohexadiene‐1‐carboxylic acid readily form the tert‐butyl ester. DMAP has
so far been used mainly as acylation catalyst. equation image
Specification of Molecular Chirality
Tập 5 Số 4 - Trang 385-415 - 1966
AbstractThe topological analysis of chiral molecular models has provided the
framework of a general system for the specification of their chirality. The
application, made in and before 1956, of this system to organic‐chemical
configurations is generally retained, but is redefined with respect to certain
types of structure, largely in the light of experience gained since 1956 in the
Beilstein Insti...
Proton Transfer, Acid‐Base Catalysis, and Enzymatic Hydrolysis. Part I: ELEMENTARY PROCESSES
Tập 3 Số 1 - Trang 1-19 - 1964
AbstractThe proton occupies a special position as a promoter and mediator in
chemical reactions occurring in solution. Many reactions in organic chemistry
are catalysed by acids or bases; likewise, most enzymes contain active groups
which promote acid‐base catalysis. To understand the reaction mechanisms
involved, it is necessary to identify the elementary steps as well as their
course in time. Sy...