Ring-Opening of Aziridine Carboxylates for the Synthesis of Tryptophan Derivatives
نویسندگان
چکیده
Key words Sc(OTf)3 - aziridine carboxylates ring opening tryptophan derivatives
منابع مشابه
Synthesis of trifluoromethyl γ-aminophosphonates by nucleophilic aziridine ring opening.
Phosphonated derivatives of trifluoromethyl aziridine were obtained with good yield from aziridine-2-carbaldehyde by two distinct methods, which resulted in different diastereoselectivities. Using thiols as nucleophiles ring opening reactions of trifluoromethylated derivatives of aziridine-2-phosphonates proceeded regio- and diastereoselectively, giving rise to γ-amino-γ-trifluoromethyl phospho...
متن کاملβ-Amino Esters from the Reductive Ring Opening of Aziridine-2-carboxylates
A general study is undertaken to examine the scope of the reductive ring opening of aziridine-2-carboxylates with samarium diiodide. The competition between C-C and C-N bond cleavage is examined as a function of the nature of the N-substituent of the aziridine, the nature of the substituent in the 3-position of the aziridine, and whether the substituent in the 3-position is in a cis or trans re...
متن کاملEfficient Regioselective Ring Opening of Activated Aziridine-2-Carboxylates with [18F]Fluoride
Aziridines can undergo a range of ring-opening reactions with nucleophiles. The regio- and stereochemistry of the products depend on the substituents on the aziridine. Aziridine ring-opening reactions have rarely been used in radiosynthesis. Herein we report the ring opening of activated aziridine-2-carboxylates with [(18)F]fluoride. The aziridine was activated for nucleophilic attack by substi...
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چکیده ندارد.
study of cohesive devices in the textbook of english for the students of apsychology by rastegarpour
this study investigates the cohesive devices used in the textbook of english for the students of psychology. the research questions and hypotheses in the present study are based on what frequency and distribution of grammatical and lexical cohesive devices are. then, to answer the questions all grammatical and lexical cohesive devices in reading comprehension passages from 6 units of 21units th...
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ژورنال
عنوان ژورنال: Synfacts
سال: 2023
ISSN: ['1861-194X', '1861-1958']
DOI: https://doi.org/10.1055/s-0042-1752186