/ Home
/ SUBMISSION

/ The BJOC
/ Diamond Open Access
/ Journal Statistics
/ Editorial Board
/ Community
/ Call for papers

/ Latest Articles
/ Most accessed
/ Thematic issues
/ Volumes
/ Authors

/ E-Alerts

/ TWITTER
/ LINKEDIN
/ Mastodon
/ RSS FEED

Empty search

Article Type

Publication Date Range

Search Tips

This search combines search strings from the content search (i.e. "Full Text", "Author", "Title", "Abstract", or "Keywords") with "Article Type" and "Publication Date Range" using the AND operator.

Search Examples

aromatic	the word “aromatic”
aromatic aldehyde	the word “aromatic” OR “aldehyde”
+aromatic +aldehyde	both words “aromatic” AND “aldehyde”
+aromatic -aldehyde	the word “aromatic” but NOT “aldehyde”
“aromatic aldehyde”	the exact phrase “aromatic aldehyde”
benz*	words which begin with “benz”, such as “benzene” or “benzyl”
benz*yl	words that begin with “benz” and end with “yl”, such as “benzyl” or “benzoyl”
benzyl~	words that are close to the word “benzyl”, such as “benzoyl” (i.e., fuzzy search)

BROWSE
Latest Articles
Most accessed
thematic issues
volumes
authors

BROWSE

Latest Articles Most Accessed Thematic Issues Volumes Authors

Author

3 article(s) from Akasaka, Takeshi

Two-fold addition reaction of silylene to C₆₀: structural and electronic properties of a bis-adduct

Masahiro Kako,
Masato Kai,
Masanori Yasui,
Michio Yamada,
Yutaka Maeda and
Takeshi Akasaka

Beilstein J. Org. Chem. 2024, 20, 1179–1188, doi:10.3762/bjoc.20.100

PDF

Graphical Abstract

Figure 1: Positional notation of 6,6-bonds in a mono-adduct of C₆₀ with the first addition site indicated usi...

Jump to Figure 1

Scheme 1: Synthesis of silylene adducts 2 and 3.

Jump to Scheme 1

Figure 2: Absorption spectrum of 3 in CH₂Cl₂.

Jump to Figure 2

Figure 3: 500 MHz ¹H NMR spectrum of 3 in CDCl₃/CS₂ 3:1.

Jump to Figure 3

Figure 4: 125 MHz ¹³C NMR spectrum of 3 in CDCl₃/CS₂ 3:1. The signals of sp² carbons of C₆₀ and quaternary ca...

Jump to Figure 4

Figure 5: ORTEP drawing of 3 showing thermal ellipsoids at the 50% probability level at 100 K. Hydrogen atoms...

Jump to Figure 5

Figure 6: (a) Partial structures of isomers of Dip₂SiC₆₀. (b) Optimized structures of 2a and 2c. Hydrogen ato...

Jump to Figure 6

Figure 7: Optimized structures of 3_cis_-2, 3_cis_-3, 3_e, 3_trans_-1, 3_trans_-2, 3_trans_-3, and 3_trans_-4. Values in p...

Jump to Figure 7

Figure 8: (a) LUMO and (b) HOMO of 2a calculated at the B3LYP/6-31G(d) level. Hydrogen atoms are omitted for ...

Jump to Figure 8

Figure 9: Cyclic voltammograms (CV) and differential pulse voltammograms (DPV) of 3 in o-dichlorobenzene cont...

Jump to Figure 9

Album

Supp Info

Full Research Paper

Published 22 May 2024

Full text

Controlling the reactivity of La@C₈₂ by reduction: reaction of the La@C₈₂ anion with alkyl halide with high regioselectivity

Yutaka Maeda,
Saeka Akita,
Mitsuaki Suzuki,
Michio Yamada,
Takeshi Akasaka,
Kaoru Kobayashi and
Shigeru Nagase

Beilstein J. Org. Chem. 2023, 19, 1858–1866, doi:10.3762/bjoc.19.138

PDF

Graphical Abstract

Scheme 1: Reaction of the La@C₂_v-C₈₂ anion with benzyl bromide derivatives.

Jump to Scheme 1

Figure 1: Changes in absorption spectra during the reaction of La@C₂_v-C₈₂ anion with 1a.

Jump to Figure 1

Figure 2: HPLC profiles of the reaction mixture. Conditions: Buckyprep column (⌀ = 4.6 × 250 mm); eluent, tol...

Jump to Figure 2

Figure 3: HPLC profiles (Buckyprep column (⌀ = 4.6 × 250 mm); eluent, toluene; flow rate, 1.0 mL/min; UV dete...

Jump to Figure 3

Figure 4: Absorption spectra of 2, 3, 4, and 5 in CS₂ and absorption spectra of C14, C10, C18, and C9 in Ce@C₂...

Jump to Figure 4

Figure 5: ORTEP drawing of 3a with thermal ellipsoids shown at 50% probability level. Only an independent uni...

Jump to Figure 5

Figure 6: (a) Charge density of La@C₂_v-C₈₂ anion as a function of its POAV values and (b) an enlarged part vi...

Jump to Figure 6

Album

Supp Info

Full Research Paper

Published 11 Dec 2023

Full text

Thermodynamically stable [4 + 2] cycloadducts of lanthanum-encapsulated endohedral metallofullerenes

Yuta Takano,
Yuki Nagashima,
M. Ángeles Herranz,
Nazario Martín and
Takeshi Akasaka

Beilstein J. Org. Chem. 2014, 10, 714–721, doi:10.3762/bjoc.10.65

PDF

Graphical Abstract

Scheme 1: Synthesis of [4 + 2] adducts of La₂@C₈₀.

Jump to Scheme 1

Figure 1: HPLC profiles of the reaction solutions (black) before and (red) after the reaction of La₂@C₈₀ and ...

Jump to Figure 1

Figure 2: MALDI–TOF mass (negative mode) spectra of (a) 3b and (b) 4b, using 1,1,4,4-tetraphenyl-1,3-butadien...

Jump to Figure 2

Figure 3: UV–vis/near-IR absorption spectra of 3b and 4b recorded by the diode array detector of the HPLC app...

Jump to Figure 3

Figure 4: MALDI–TOF mass spectrum (negative mode) of the reaction mixture from La₂@C₈₀ and 1a, using 1,1,4,4-...

Jump to Figure 4

Figure 5: ¹H NMR spectra of (a) the mixture of 3a and 4a in C₂D₂Cl₄ at 248 K, and (b) isolated 4a at 230 K, r...

Jump to Figure 5

Figure 6: HPLC profiles of the mixture of 3a and 4a, (a) after heating in refluxing 1,2-dichlorobenzene and (...

Jump to Figure 6

Figure 7: HPLC profiles of the reaction mixture of 3b and 4b, (black) before and (red) after heating in reflu...

Jump to Figure 7

Figure 8: UV–vis/near-IR absorption spectra of 3b and 4a in toluene.

Jump to Figure 8

Figure 9: Temperature-dependent ¹H NMR spectra of 4a in C₂D₂Cl₄ (left) at 300 MHz, and (right) at 500 MHz for...

Jump to Figure 9

Scheme 2: Synthesis of [4 + 2] adducts of La@C₈₂.

Jump to Scheme 2

Figure 10: HPLC profiles of the reaction mixture for 5b. Conditions: column, Buckyprep (Ø 4.6 mm × 250 mm); el...

Jump to Figure 10

Figure 11: MALDI–TOF mass spectra (negative mode) of 5b, using 1,1,4,4-tetraphenyl-1,3-butadiene as matrix.

Jump to Figure 11

Figure 12: Vis–near-IR spectra of 5b, 6 and La@C₈₂ in CS₂.

Jump to Figure 12

Figure 13: ¹H NMR spectrum of [5b]⁻ in acetone-d₆/CS₂ (3/1 = v/v) at 223 K.

Jump to Figure 13

Figure 14: ¹³C NMR spectrum of [5b]⁻ in acetone-d₆/CS₂ (3/1 = v/v).

Jump to Figure 14

Figure 15: HPLC profiles for comparison of the thermal stabilities of (a) 5b and (b) 6 at 30 °C. Conditions: c...

Jump to Figure 15

Album

Supp Info

Full Research Paper

Published 25 Mar 2014

Full text

Other Beilstein-Institut Open Science Activities

/ Help / Support & Contact / E-Alerts / Privacy Policy / Terms & Conditions / Impressum

Two-fold addition reaction of silylene to C60: structural and electronic properties of a bis-adduct

Controlling the reactivity of La@C82 by reduction: reaction of the La@C82 anion with alkyl halide with high regioselectivity

Thermodynamically stable [4 + 2] cycloadducts of lanthanum-encapsulated endohedral metallofullerenes

Two-fold addition reaction of silylene to C₆₀: structural and electronic properties of a bis-adduct

Controlling the reactivity of La@C₈₂ by reduction: reaction of the La@C₈₂ anion with alkyl halide with high regioselectivity